i never knew there were neon tetra look-a-likes until i saw them at the store, they're called cardinal tetras, lol. They're a lot bigger than neons and a lot more fun to look at in my opinion, but neons are just as cool! I've had neons when i was a kid.
Remember that generally tetras will thrive in softer, more acidic water and in hard alkaline water you may not get the same colour intensity - or happy fish! :)
Personally, I love embers (which I own). They are tiny and adorable, incredibly peaceful (perfect tankmates for a betta!) and just look so amazing in a heavily planted tank. :) Cardinals are my second favourite.
Cardinal Tetra are awesome, I'm interested in keeping some of them eventually. My tetra are pretty inactive during the day...they move sometimes, but when I turn my AQ lights out, they are sooo active.
I had a couple Neons with my Betta. They eventually got stuck in the intake and died. How they got in there when the intake was fish proof. I dunno. One eventually died. They were pretty small when I got them. I have Glowlight Teteras in my tank right now. They're healthy and their doing fine. I like to get some more. They always attack the sinking pellets when I feed my cories. lol