yeah i know that like 90% of all of you hate the older generations for whatever reasons, but i'm still posting this.
anyway most of my favorite older ponies are from g3, and i like some g1 ponies also.
favorite g3 ponies are:
minty, because she's awesome!
star catcher, i remember wanting the toy of her really badly. unfortunately i never got one...
twinkle twirl
sunny daze, because she's rad and i love her design.
rainbow dash (the g3 version; i also like g4, even though they are both kind of annoying)
starbeam, because design is pretty
wysteria or wisteria
and for g1 it's twilight and firefly, that's pretty much it.