Apologies for bumping this old thread, but it was a relief to see other leotard-buying addicts! I think I need to join LBA! My DD trains twice a week and has 8 sleeveless leos and 4 long-sleeve leos (not counting her club competition one), plus a few more I've put away in the next couple of sizes up! I love getting bargains on TradeMe (like ebay), it is almost like a hobby! It is good to have plenty of spares so that I don't have to worry about having them washed and dried in time (that's my excuse and I'm sticking to it!). Also, DD is a girly girl who loves dressing up so it adds to the fun for her - I mean gymnastics can be hard work but if you look like a princess in a pink sparkly leotard it's a lot more fun!
At our gym they mostly wear sleeveless leos, but in winter some girls do wear long-sleeve leos for warmth. I'd never heard of sleeves being a problem on the bars, that seems strange since they compete in long-sleeved leos.