I think that currently Deore vs SLX is more or less a difference without a distinction. The DVO vs 34 at your weight probably is a huge difference, especially with the drops you are riding. I would also say that the RIpmo AF suspension design is far ahead of the Siskiu. Essentially, the Polygon is a great bike at the price, the Rimpo AF is just a great freaking bike and worth the increased price if you can swing it.