I keep up to date with the hosting debate here on Drupal.org. I used to have my own CoLo and I didn't care. My servers had loads of memory and disk space. Only problem was the cost to host and hands on support, and I was getting worried about the hard drives on my servers....so I decided to cut costs and switch to a Shared/VPS hosting.
After some research, I decided to go with Linode. I set them up for one of my clients and have recently just purchased a node for myself. Roughly 1 year hosting with them and I have no had any problems.
Today I just found out they decided to upgrade the memory on all their plans. One of the reasons I decided to go with Linode over Slicehost, is because linode provides retro-active upgrades to all their customers. Something slicehost doesn't do.
So the memory on my account after a reboot has moved from 540m to 768m. I couldn't be happier and I figured I'd let those on Drupal.org know about this. Certainaly makes Linode much more attractive on the price point perspective than slicehost now.
Read more here:
http://blog.linode.com/2010/06/16/linode-turns-7-big-ram-increase/