Down the road, I think you will have better luck with repairs and parts with the ariens. Snowtek, i believe, is made by ariens, but it's their cheaper line.
I would wait out the season and see if you can pick up an 28" ariens in March or April. But if you can't wait, then go for the ariens (my personal choice since parts for this machine are more readily available). No electric start on that one?