I would say launch NOW. I was in a similar situation, I was just plugging away at a site and about 1-2 months before I planned on launching a competitor (with

I would say launch NOW. I was in a similar situation, I was just plugging away at a site and about 1-2 months before I planned on launching a competitor (with an inferior service) launched. I decided to work as hard as possible and launch about 2 weeks after that. What a mistake, the competitor always has an inferior site, but I never caught up. I would have been much better off had I just launched and not tried to make things perfect. The users were perfectly content with the competition. My advice would be to launch first if you can and get the users to market for you.