I prefer, and use, omnis. I have a pair of DPA 4061s and have used them in a tiny shit-hole of a bar, theatres, arenas, and amphitheatres and sound pretty solid at all of them. I love a stack tape so Im usually right up on the stacks (not so good for your ears by the way) but others like the FOH (near the soundboard spot) which gives an overall better sound since thats where the house sound is mixed from. Ive taped front row dead center and got nothing but kick drum and guitar amps...almost no vocals at all. So if you're going to be in the thick of it dont be too close.
Ive got some random songs on my site you can check out.
www.enemyzero.com/greg/music/
1st song in a club that holds about 500 people. I was standing about 1/3 way back to the board between the board and the stage a little off to the right.
2nd song WAY off to the side in an amphitheatre pretty much right next to the left stack.
3rd song a little further back in the same venue as the first song
4th song sitting right next to the board in a club that holds about 1100 people.
Hope that helps.