Well, in the span of a few months, I've gotten a fair share of Bio sets.
Let's go in order.
Lewa Phantoka - He's awesome =D His Chainblade, mask, and color is good, though you could get tired of the bley.
Mutran & Vican - More lime, and black's introduced, but I finally have a Matoran I could Moderator to be an av-toran(All I have to do is switch the feet for a better one, and really that's good, since I'm not really in a position to have limegreen eyes...)
Pohatu Phantoka - Yay =D His orange is sparse, but very nice. I wish his mask had've been full head, but now I essentially have a Vahi!
Kopaka Phantoka - Awesome. His Bayonet is very cool(Pardon the pun), and his mask is nice as well. He's the only one without a visor for the Phantoa though.
Toa Ignika - My first encounter of the Piraka Torso kind. The torso is pretty cool, though those characters are usually shorter than those that have Inika torsos, because you can't adjust where the Torso connects to without heavy changes. His mask is cool too =D
Onua Mistika - Woot, Onua's very cool. Though I've already got his feet twice(Jaller Mahri and Pohatu), this is the first in Black, and are very cool. Plus, I can see his battering ram Nynrah attachment coming in handy for stuff. And his shield's pretty cool. Plus, the piece that keeps his head from wobbling is very nice. And contrary to popular belief, to me, you CAN in fact see his eyes while looking at the front of the mask.
Gali Mistika - Gali isn't half as bad as every keeps saying. She's got a good mask, her mask fins being pretty ingenious, and silver Inika legs are fine with me. Plus, the feet jets are cool too. Though, I wish the Set Designers had've made the shoulder armour more like the Inika Shoulder Armour, because it wobbles. A lot. Not that much of a problem, just the noise when she's moving though
I don't like the setup for her head, but it's nothing a little MOCing can't fix, and is a step in a better direction(Though Onua's was better =P)
Krika - He's surprisingly big for how many pieces he has. His blade's are awesome, and his white pieces that have red in them are trans white. The rumours about not being able to stand with only three legs are true, but most people wouldn't be worried about that, except for the people who pose their sets. His head is interesting, and has a black metru arm for a neck, so that's cool. His torso has a white version of Onua's chest armour, which is pretty good, and did I mention his blades are awesome?
Gorast - First of all, Limegreen and Black are very cool. Anyway, she comes with two of the claw pieces Takanuva uses for his hands, in silver still though. Her mask is fully rubber, which was surprising to me. The new claw pieces she uses for her feet are interesting, and so is the set-up of her body. I think the wings could've been done a little better to have articulation though, but meh. Her head kinda sticks out pretty far unless it's at an angle, where it looks pretty good, so I keep it there mostly, unless I'm doing a pose which she looks good to have her head out, like hissing. Anyway, moving on to the final set I've got...
Tahu Mistika - The Ninja strikes in the Swamp! Tahu actully looks pretty cool, and has a red version of Kopaka's feet, which is good since I only had only pair, Kopaka's. His Spinning Blade Shield is pretty cool, though I've found you should mount the shield on one of the stud holders on the side instead of where the instructions say, spins better there. As for the mask... As all the Toa Mistika and Toa Ignika had, Tahu has an insertable stud rod for a mouth attacher. Mostly it stays on the mask, though sometimes it stays in the person who is wearing the mask's mouth, which can look pretty comical. Anyway, Tahu's jets look pretty cool, and I've found they can be slightly modified with some of the pieces attaching it to point in front of Tahu, meaning he looks right when on his front and flying, though I think the air pushes downward through the jets, instead of the other way. I mean, it'd explain how the OTHER Mistika don't fly towards the swamp, seeing as Onua's jet faces downwards, and when Gali has her feet in a swimming pose, the Jets face that way too. Moving on, the Nynrah Ghostblaster is cool. Does always fire far, but unless the rocket's pushed in too far, it DOES fire. Tahu ALSO has those Gorast claws, and silver Piraka legs, which is cool, plus metru arm armour, which is pretty cool for me, plus he has one of those tri connectors. Also, as with almost all the Toa sets this year, he has an Inika Shoulder Armour piece for Solek to connect to, but I haven't tried that, since all I have is my deteriorating Av-Matoran MOC, and Vican.
Anyway, that's a sum up of my sets I got recently, ... Plus a kinda mini-review =P