I have 860 because that matches what I play on at leagues. If you go a lot faster at home then you will be off when you play somewhere else. I would stick with standard 860 unless you play on tables regularly that don't use it.
If you want to use simonis, then I suggest you use 860HR, as it wears better and you don't get that simonis slide as opposed to the regular 860. I have tournament blue 860Hr installed on my 8' Gold Crown II. check out the ask a mechanic section for a good price on simonis.