We currently use ASC for administration and are considering switching. We would appreciate any comments/suggestions regarding other administration software, especially Relius. We don't do daily valuations, so that is not an issue.

Almost all the bells and whistles are there, I guess it depends on your learning curve. Seriously.
I am tied in with the Southern Users Group, and have even done some Relius training myself. I think one takes a different approach to teaching when doing it from an administrators point of view than from a vendor's 'how to' run the software. There are pluses and minuses to both.
I have seen people locked into former software and unable to make a smooth transition.
Hopefully you have some experience with Crystal, the ability to modify reports to your liking is extremely important.
Or 'steal' some custom reports from others. I've posted a few on the board here from time to time and so have some other people. There is an ugly rumor from people that I know everything about the software - hardly - but it is fun to keep them fooled!