Difficult to buy bad brakes these days (unless they're avid's), just depends on your personal preferences really. And budget.
As a general rule, Shimano tend to be a bit more snatchy than most, Hopes quite progressive. I've always got on well with Shimanos but some don't.
Nobody needs anything better/more expensive than Deore's. They're awesome for the money, the only reason you'd buy anything else is if you really don't like the feel of Shimano's, or for vanity reasons. But then if you're building a lovely new bike, then by all means you want the brakes to look nice too!
Got Deore's on my Kona, only thing I'd change them to would be SLX (to match the SLX kit on it). Just building up a new Kinesis Sync as a demo bike, decided to put Formula T1's on it. Why? Well cos my god they work, and they look sooooo pimp! If you're spending £1500 on a frame, then £500 on the brakes is almost easy to justify!