Need advice

Hello, I need some advice on the best brand of clip in human hair extensions to buy.  I've had extensions before (braided & sewn in) and just don't want to go that route again as my hair thinned but it grew back.

My hair is about shoulder length now, but I need a little bit longer & fullness to it.  It's naturally 'fuzzy' at this point and driving me crazy.  I lost quite a bit of hair last summer due to taking the rx phentremine (sp?) for weight loss.   Lost the weight, but lost 1/2 my hair too, so now I have about 2" regrowth all over my head in addition to the shoulder length hair & the regrowth is fuzzing everything up! 

Anyways, I need some advice on which clip ins to buy as there's so much out there it's confusing.  Thank you so much, Sam.

Thank you so much!  They're reasonably priced too!