Any particular reason for Slicehost as opposed to any of the other similar options (Linode, prgmr)? I'm not affiliated with any, though I run my site on VPSes from Linode. I was convinced by a Dec 2009 post by an HNer, uggedal: http://journal.uggedal.com/vps-performance-comparison
Me too. That post was detailed & fair. On slicehost I had a 256MB slice which I upgraded to 512MB slice to host 2 small websites. After the post got a 360MB linode VPS instead and am very happy with it.
Edit: Slicehost help articles & resources, well organised & exhaustive is a plus though.
