For Rails/Merb projects that can afford it, I love Engine Yard. They're way more expensive than VPS hosts, but you get a support team who specialize in Rails/M

For Rails/Merb projects that can afford it, I love Engine Yard. They're way more expensive than VPS hosts, but you get a support team who specialize in Rails/Merb deployment. It's like outsourcing your sysadmin team, too. For lower budget, I love Slicehost. I either want full control, or someone I trust in control.