Hi,
I am running 2 dolphin sites on HostMDS.
They don't have an auto-install yet, but I'm sure you could talk them into that in return for a bit of traffic.
Otherwise, they seem to be very compatible.
Their main advantage is that they don't put limits on anything (except perhaps processing power - you have to pay for more grunt)

They are just changing name from vistapages,
so please forgive any confusion
http://www.vistapages.com/cgi-bin/aff/clickthru.cgi?id=donkeyhoty