Tarptents all the way. Really nice, roomy, good quality. If you aren't totally hunting with camp on your back, but simply spike camping, I'd consider getting carbon tent poles for the tents vs. Tarptent's aluminum poles. LINK
I wouldn't carry a tent that heavy (especially paying those prices). Tarptent's Stratospire 2 is big enough to toss and turn and keep your pack inside and is half the weight. If you are willing to carry something in that weight range, I'd look at a Eureka Apex 2 person. It is still lighter...