I just bought a Craftsman 2 stage, 24in , 208cc at Sears last week. Its amazing.... I looked at Ariens and while I think they might be slightly better made i couldn't justify the extra $150 for what you get imo. The Craftsman has great reviews. I used it last week with 11in of wet snow and it demolished it.
Mine was $639 which i thought was reasonable. It has electric start, 6 forward gears and 2 reverse.
Do yourself a favor and at least look at it.