Good afternoon Phill Dresser,
If you are comfortable with Delta 3200, then it will be a good choice. You might also want to think of using other films, like TMX400 used at ISO 1600, which I have found a bit better contrast results than Delta 3200 at ISO 1600. However, if you will be shooting at ISO 3200 or higher, then it is hard to beat the results from Delta 3200.
Colour films are a tougher choice. Kodak gave me some of the new Portra 800 to try at ISO 1600 recently. One big issue is that not all labs will push process C-41, so you would need to check this first. Some people just like to underexpose a stop or two, then process normally, though my personal feeling was that I did not like the results as much.
In transparency (slide) films, there is Kodak P1600, which works well up to ISO 6400. This is becoming quite expensive, and harder to find. I found that with stage lights, I was using it at ISO 800 more often, so not much of a push (P1600 is technically an ISO 400 film, and using it at ISO 800 would be a one stop push). I have used this for many years, though as the price went higher, I searched for alternatives. So far, the best alternative I found was Kodak E200, though I have also used Kodak 320T push processed. The 320T (Tungsten film) is nearly as expensive as P1600, and grain is very similar. you can use 320T with a 3 stops push and 1/3 to 1/2 stop exposure compensation, and it is a little nicer than P1600; also does not need any filtration.
With E200, the Kodak data sheets list up to ISO 800 as a three stop push. This film does not push in a linear manner, and needs exposure compensation on higher push settings. After numerous tests, I came up with settings to go to 4 2/3 stops push. Another advantage with stage lighting is that higher push settings involve a blue colour shift, meaning that a weaker blue filter is enough (either 82A or 82B, depending upon lighting).
I have nightclub images in the portfolio section of my website that are mostly E200, with some 320T thrown in. On another band website, there are many more P1600 and E200 images, and some Ilford HP5 shots that were done at ISO 800 settings. If you are curious that site is:
http://www.bigtimeoperator.com
Go to Gallery, and the B/W shots are mostly HP5, with some TMX 400 thrown in. The Night shots are probably ones you might find interesting. The Colour section is just E200 used normally. No post processing other than rare cropping, so what you see is as close to the 35mm film as possible with JPEGs on a website. Anyway, definitely feel free to ask any questions.
Ciao!
Gordon