What's a good hairdryer for around $50?

My old hairdryer (some Conair contraption I bought for $30) gets the job done, but I've used other hair dryers that make my hair less frizzy overall. What's the best hairdryer I can get for around $50? I will also consider a pricey one I can get at ULTA (they always have coupons and deals). And tell me why!