I have a dreamhost acccount, but got another one at slicehost to be able to run my rails app. Has anybody tried to see what performance you can get now? My site

I have a dreamhost acccount, but got another one at slicehost to be able to run my rails app. Has anybody tried to see what performance you can get now? My site doesn't generate any traffic yet, but it's ok to have a decent response time when I run a demo of it.