Yep, I'd steer clear of the Target ones as well.
Some of the others can be pretty pricey - but sometimes you really do get what you pay for.
My friend used to own a kids store that had a dance/gymnastics section. She carried Alpha Factor/Aerials and GK Elite.
She said she felt like she really only made $$ on the moms who had to have the newest styles each season because the rest all just bought two or three leos and then kept them forever because they held up so well.
I'd say that might be a fair assessment based on some of the styles still around on e-bay.
My girls have been in gymnastics for ages and I'd probably go with either AF or GK as I've heard of very few problems (other than maybe sizing consistency) with those.
We have had pretty good luck with Rebecca's Mom, Snowflake, Motionwear and Look-it too - but have had one or two of these brands that were not great.
My favorite was when the girls all decided to wear speedo's to workouts for a couple of summers. They're expensive too, but at least they served a dual purpose.
The worst we had were one years' team leos that were supposedly very high end, custom made and over $120 each. Can't tell you how many of those were falling apart by the end of the season. Go figure!