The oft neglected G3.5s can get a poll too.

[Yurusumaji]

So, you tell me, which are the best 3.5s in your opinion and I will go look them up

The mommy ponies have larger bodies, so their heads aren't as disproportionate. The bigger figures are all nice. I have a small Pinkie Pie and Sweetie Belle, medium Cheerilee and Scootaloo and then a large Mom Dash. I like them all, but I think people favor the bigger figures (the moms) because their larger bodies suit their heads a bit better.

Chibi style takes some getting used to, but I've seen so much of it and it's really grown on me over time. I certainly think it looks better on ponies than people. 

[Salli]

Ok, I looked them up. Wow, there aren't very many of them are there? I think I figured out why I dislike them. I hate their boxy, open mouths. I thought about it and I tend to not like the ponies of any gen with open mouths. I ended up picking  the long hair ones because I think the long hair helps kind of bridge the gap between the skinny necks and large head, making them actually look cute. I also thought Sweetie Belle looked cute in most of her poses.
I used to hate g4's, but between the show and customizing one I was sold, now I can't figure out how I didn't think they were cute in the first place.

[Colorscapesart]

Mommy pony FTW!

[Bag of Magic Food]

The sparkle is just there because... sparkle!

 

yeah, sparkle sparkle sparkle! 

[language edit ~ many thanks ~ hathorcat]

[keylimepony]

I picked Super Long Hair because I have super long and often unruly hair.

[Kalavista]

I LOOOOOOOOOOOVE G3.5's. All of them. But especially the Mom ponies and the Newborn Cuties.

[scarletjul]

Voted for holiday, sparkle and new hairstyles. 

[Tiffoes]

I choose for Super long hair, TAF and Sparkly ponies! I didn't expect so many people to choose for mom ponies, I guess we have a lot of motherly people here? :3

[ApertureScience]

I'm not a fan of the actual G3.5 toys that were released.  I like the artwork, but the toys haven't grown on me yet (with the exception of the tiny Ponyville figures).  I chose New Look and TAF, though.  I love how they put in some effort to get the hairstyles right for the brushable figures.

[Nerdfins]

I voted for the TAF ponies, but I like the Special Edition Rainbow Dash and Pinkie Pie.  Though I'm still not a huge fan of 3.5.