What brand have you used? Were you happy with it?
In the past I just used some from Sallys. I have had some from different ebay and amazon shops, and just bought a pair for almost $300 from Foxy Locks. The best ones were actually from Sallys, but I cant get them the color I want :(
The Foxy Locks ones are HORRIBLE. They are supposed to be "remy" (the hair cuticle all in the same direction like with your natural hair, not hair all mixed up in different directions). Its absolutely NOT. They are matting up like crazy which is a HUGE sign of them not being Remy. Even my Sallys ones dont do this. I filed a paypal claim with them and I am hoping to get my money back :(