Best Theme Support From…???

Hiya:

Which theme publisher has the best and quickest support for their themes?

I have an existing site via WordPress.com and I’m moving it to self-hosted. Having shopped for themes over the past two weeks, I’m underwhelmed with slow support or lack of communication offered by four theme publishers. Although many nice-looking themes are available, I’d prefer to work with a publisher who provides clear communication within reasonable time periods. If I find a concern I’d prefer it to be acknowledged and fixed within 48 hours max because what I’m asking for isn’t involved. If it can’t be solved in a given time period I need to know what’s going on and what my options to solve it will be.

Anyone got good experience with particular publishers? I’m willing to pay a little more than the license rate to simply get my new site up and running, because once everything’s set up I’ll be a low-maintenance customer. But I can’t be waiting for a publisher to answer mail or fix bugs which should have been solved in beta.

Who do you like, and why? Thanks very much!