I'm in the market for a second bike (in the next month or so). I'm 6 foot tall and currently around 250lbs (and shrinking). Right now I ride a "mountain" bike, a hardtail that's 34lbs with 2 inch semi-slicks. I have been increasing my rides and I'm doing about 70-80 miles a week now, mostly all of which is through the streets. I'm looking for something a little faster but still comfortable and can take the crappy streets of NYC. I was at my local LBS today getting my bottom bracket and brake pads changed and I looked at some giants. So far the roam, seek and rapid models are on my radar, any thoughts?