Depends on the quality of the cheaper cloth. If it is really bad quality fabric, the suit will always look cheap. On the other hand, you don't need top quality fabric at this price point. I would aim for medium priced cloth, but try to go with someone that knows a bit about fabrics. Before you get too caught up with hand vs. machine stitched, ask if the suits are fused, full or half canvassed.
Yes, ridgeway is much better than danite for outdoor uses. The rubber is softer, the tread is deep, and designed for things like hiking. Commando soles are better than Danite, but worse than ridgeway. I find the rubber on commando soles to be too hard and the studs too short for hiking. I would think that lug soles would be fine too.