Are you natural or relaxed?
Look to spend at least $60/pack on good-quality hair at a BSS.
I've used Mona Italian Yaki; very good stuff, but will run you about $90/pack nowadays (you only need one anyway). If you don't want to spend a lot of money, I would recommend Motown Tress (just be sure to seal the wefts with nail glue or Aleene's Fray stop--you can get it from the fabric/craft store cuz it sheds like crazy! Black Diamond is good, so is Sensationnel and Hollywood (the Black pack).
I'm not really into Remy silky hair (I'm two weeks into an install with Outre Velvet Remy--$60 a pack for 10"; it doesn't tangle, mat or shed but it's TOO silky and I'm taking it out tonight or tomorrow--$225 bucks down the drain) because I don't like the "Becky Meets Kunta Kinte" effect when my roots grow in and I can't blend them very well... LOL!!!
I used this brand on a friends' hair and although the hair was very nice it was way too silky for my taste. It didn't shed or tangle up and it was a decent price. My friend on the other hand LOVED it...it's all about prefrence. Bohyme is another good brand and the Brazilian wave texture is to die for!
Stay away from the Milky Way, Zuri, Urban Beauty and Beverly Johnson brands! And, the lighter the hair shade (anything higher than a #4), the more likely it is to tangle (because the hair is overprocessed).
The Beverly Johnson was the WORST, I used it on my mother's hair and it tangle like a nasty bird/rats nest after the first wash, it was nearly impossible to cut loose.
HTH...sorry for it being so long.