Lots of bike out there. Peaple seem to think they're junk if they don't have suspension. I have a Redline Mahatten Trek 700 Giant Sedona and my newest a Fat Chance.
I would think the size is probably the most important thing to look for. All the bikes are cofortable and trouble free.
The Giant was a resurected throwaway the I have beat on and abused for years but it just keeps going. Quad butted Chromoly (sp) still strong and straight. The Redline is a "city bike" but built like a MTB. It has rode trouble free for years. The trek 700 was a dump find and rides just fine. The Fat Chance unbelievable. I thought it was small for me 19" I'm 6'1" but seems just big enough. I did not relized how prized a bike it is before I rode it. I am amazed a how smooth and resposive it is. It begs to be ridden hard.