Well, I tend to do upper splits often because I find that if I do too much Cathe standing work I bulk a little.
I do the Cathe PUB pre-mix up often.
I also do the ME upper body only and the ME/bootcamp combo
When I do supersets, I do the upper body blast.
I also do all the upper body work from the Timesaver DVD.
Can't say which is my favorite - I love them all.