Not in the cards for me. Technically still under non-compete, but even if that weren't the case at this point I am connected to so many other hosting providers that I'd rather just support them in doing the right things and work on other stuff. Right now I run a startup accelerator and am spending my time as a full time seed stage investor.

What's your beef with the Rackspace service right now? As far as 'big' providers, besides the obvious AWS and Rackpsace, you should also consider SoftLayer and Joyent, and depending on what you are doing the PaaS providers are all getting pretty solid now - Heroku, AppFog, DotCloud, GAE even Azure (node is a first class citizen on Azure now).

If you want something that feels really VPS-y that is run by a Slicehost-style team, Linode is a definitely a solid option (mentioning them first since this is their thread). I also am a fan of DigitalOcean (they went through our accelerator and I've spent a lot of time with them), and 6sync is run by Mario Danic who was a super active early Slicehost community member.