So, let's discuss symbol types.

[Shenanigans]

This was kinda hard I chose food, royal, and jewels. I also love Heavenly bodies, gradients, simple shapes, fun stuff, and seasons

[Sonata]

For me, it's food, heavenly bodies and weather/seasons !

[popyduggan]

Heavenly, Weather, and Abstract for me. Nature patterns just feel more believable to me though Pinkie Pie's looks really cool colorwise.

I also love the Sourdough Stomper name, I would love to use it as a bad guy pro wrestler and smoosh a loaf of bread in front the audience every night and they'll be like,"Oh my goodness Blanche, did you just see that snollygoster just bruised those innocent baked goods!".

Can't be any sillier than Ice Cream Jr. http://youtu.be/eBeOQExmI-0

[Saja]

I like lots of things too, but for this i just picked mammals, aquatic an birds. As I usually oooh an aaah more over animal type customs these days!

[JazzMatazz]

I love space themed ponies! And food, I think its just a fun idea!

[achab1984]

I really like them all . I do not have a favorite over any other.

[SourdoughStomper]

Poor Steamer, 4-Speed and Scooter Sprite. No love for 'em.

*is tempted to debate the comment about "innocent" baked goods, but refrains.*

[gemini_pony]

I picked food, mammals and 3d symbols! I love ponies with food symbols the best <3

[Sugar]

I had to go with heavenly bodies, as TAF Nightglider is my new grail!!!  (Seriously, I'm beginning to think I've become slightly obsessed with TAF ponies in general... )

I also chose ordinary objects, as I like the teacup/button/pencil type symbols on both G1s and G3s.

And weather/seasons since I'm keen on autumn- and winter-themed ponies.   'Specially winter.  For some reason.

But any symbol is great, 'cause a symbol=pony (or, worst case scenario, a fakie).

[NoPonySpecial]

Only three options! No fair, that's too hard!
Sorry, animals. Maybe if you had all been a single option I'd have voted for you. Oh well.
(weather, plants, and household, here)

[Sunset]

So I chose heavenly bodies to begin with just because they've always seemed so magical.  Then I chose weather/seasons for two reasons.  I do like weather symbols but I also love Christmas/winter themed ponies and seasons was the closest option on the list.  Finally, I chose gradient because I do like gradients but I also thought that might cover TAF symbols and I just love ornate ponies.

[hathorcat]

Ooooh good question!

I just went for mammals and birds and plants - I like the nature aspect of symbols - they feel fitting for a ponies to me

[starflyer425]

birds, stars and scifi. :3

[StarlightGaze]

Celestial objects, plants/flowers, and weather symbols.

[LadyMoondancer]

H-how can I choose just three??