I started with a Trek 7100, 20", and here's my 2 cents. The 20" frame was as tall a frame as I wanted, I'm 6'1" (ish), but I have short legs for my height (imo), with 36" inseam jeans being the size I wear. The 7200 has a freehub 36 spoke wheel (on all the models I looked at). The 7100 was a 36 spoke freewheel design, the freehub is a stronger hub for weight, as the bearings get moved further out on the drive side. I broke 1 spoke, and found the wheel and axle bent, but I don't know if it was me, or if it was bent when I bought it. I was 300 pounds when I started riding it. $250 is a "meh" price to me for the bike, not exciting either way.