i have the BT200 and i can attest to the poor construction quality. i don't use it much and already it's falling apart. it works good indoors but forget about outdoors because it is very susceptible to wind noise. also, it can only bond to one headset so it's a hassle if you want to share the headset.
that being said, it was the cheapest headset by a mile when i bought it a year ago and i would recommend it to those on a budget.