I know that this is an old thread, but I'd like to share my experiences with Digital Princeton. I have switched to them too, and their service has been great. They have been very flexible, and they will help you when you need it. Steve, my contact person also, is very good. We had a small problem with email spam, and he worked with me to find and solve the problem.
I'd recommend them to anyone looking for a good stable host for UBB's.
On a side note, since I switched to DP, my site pager has paged me fewer times since I switch than it did with my old host in a month. (I use SiteMonNak to page me if the site goes down, and I rarely get paged now. I used to get paged almost nightly)
