I apologize for the long-windedness, but here are my two cents on some of the ones I like:
Wyverii - I love it! I wouldn't mind seeing how it looks in other colors, but I think the current scheme will probably end up being the best. The only other minor tweak I can suggest has to do with the "hair" spikes (the yellow ones) around its head. I'd like to see how it looks with those either modified or removed.
Princess_power - I really like the tail and the wings (minus the crescents). The whole thing works very well; however, ParadOxymoron mentioned "Faerie Dragons from Warcraft", and I feel this design is very similar to the WoW Dragonhawks. I love design, I just think it needs to do more to set itself apart. The WoW models are very smooth and flowing, whereas this is more jagged; that might be somethign to focus on in the refining process.
Caladbolg~ - I like your "child playing with something, in this case: electricity" concept best. It's very cute and playful. I'd like to see more details and a color scheme.
Cartoons! - Simply amazing! I love the uniqueness of this design. My only possible concern is in the snout, which, at the moment, reminds me a little of a bull or a boar.
Atyroki - Definitely a great "cute" design. I personally like the pink, but it's going to be too much for some people, so I'd recommend playing with the shade, or completely changing the hue. I think the shape of the head needs to be revised; lightning details look good, but the round head on the long neck remind me of a worm. The wings do a great job "toughening up" the cutness; I think the head needs to do the same.
aragornbird+ - Another awesome "cute" design. It's adorable, and looks like a defensive Pokemon, as many people seem to want. The one small change I would suggest is to either change the tail spikes into light bulbs, or change the bulbs on the head. I don't know if bulbs down the whole length would be "too much"; if so, maybe it could be one big bulb on the end of the tail?
DougJustDoug** - Very cool looking! I like the general shape, the spikes on the back, and especially, the tail. I'm not sure if I dig the single talons, but I'm not totally sure what would work better in their place.
pkmn-taicho321 - I think your current design is really good. While I love that shade of blue, I personaly think a darker shade would work better for this design.
InHell 13 - I like the design with the ring around the tail.
VelvetEvoker - Fantastic concept! I really, really like the circuit idea, and the head is just plain cool. I also like the spike-things above the rear legs. More details and a color scheme!
RotationalBasis - I like the face; it kind of reminds me of a bear trap, with a lightbulb on top. I'd work on the frill more, or remove it--right now, it looks like one of those cones that vets put on dogs. I love the switch on the back! I think the blue colored one works the best.
CyzirVisheen - These look cool! I want a better scan!
Estranged - I like it. The yellow shoulder spikes are cool. I'd also recommend changing the general spikiness, and possibly the color as well. As is, it looks more like a Ground-type.
Yilx - I love the first one. The batteries look really cool, and I like the general shape and proportions of everything. I love the mischievious look the second one has. I think, though, that if you are to continue with this concept, the "fluffy" look doesn't quite work. I see this piece more as some barely-glimpsed creature viewed through an electrical storm.
nardd - I love the idea. I think I'd rather see four legs, and maybe some small dragon-esque details (maybe more toad- than frog-like? Horny toad for example?) I really like the coin in his mouth.
