Eric I would think long and hard before you migrate. My sites are down almost daily, it always seems to be a MYSQL connection error. Sure these things might happen now and again, it is to be expected and if things were fixed in a few minutes it wouldn't be such a big deal. In my experience sites are down for any length of time from 45 minutes to a few hours.
I don't know what has happened to Dreamhost, when I joined around3 years ago the service was faultless, my sites just didn't go down, support was available via a live chat and I used to recommend Dreamhost to everyone I spoke to. Now I wouldn't send my worst enemy to DH the service and support is that bad. Just recently I had a real moan to support and they kindly gave me live chat at no extra cost (this used to be included, why is it not included... go figure!). However whenever the sites are down I go to use the live support and it's off line to the gesture is pretty much useless!
If my sites were not so big and migration wasn't going to be such a pain in the butt I would have gone long ago, like I said it is sad because it was an awesome host once upon a time. Interesting to note that you get responses within 30 mins, well you are on a trial period right and they want to impress. I now have to wait 24 hours for a response, often 48 hours.
Having said all this a friend of mine is also with DH and his sites go down, he is on an older server in a different data center.
Just my input.
By the way, why am I here and responding to your post... becasue right now my sites are down..... AGAIN!