Originally Posted by 8ounce

I am looking to buy a compact crank and I currently have a 9 speed system. I was thinking of buying a 10 speed crank for 2 reasons, 1: I can get better deals on them, 2: I may upgrade to 10 speed in the future. I know this has been spoken about before and this setup can work, but is there a possibility of having issues. I would hate to spend money on an upgrade that would give me inferior shifting.
Also what would be recommended, a 9 speed chain or 10 speed.

Once again, I know this topic has already been discussed, but I guess I am looking for some reassurance or forewarning before pulling the trigger.

Thanks