You should try MS sometime (as long as you are not in the back of the house).
The 2 biggest complaints about MS are:
1. you have to matrix in post
2. weak bass
Well, yes, you need to do post, but then you can control your stereo width. How many times have you found (afterwards) that your recording was too wide? Just narrow it down a little and there you go. As far as the bass thing goes, this is only true to an extent. You won't get the amazing full rich bass that is possible with split omnis but I dont' think that set-up was on your plate. And, if you think that the bass isn't wide enough for your liking, then use a shuffler (look it up) in post.
OK, I'm ready to hear all the purists slam me now for mentioning post processing as a good thing...LOL!
m/s has it's place. i feel strongly that in a FOB situation, it's acceptable.
otherwise, if you're in an OTS, any stereo configuration other than m/s will do you better off, as the signal is often much quieter
(in order to prevent clipping)