The Pro VLA and the RNC are great units( have both) but if your budget allows for it get a Chameleon Labs 7720. I just got 2 of them and I'm reeeeeeally happy with them!!! No they don't sound like SSLs but they DO sound great and the sidechain detector circuit is the shit.(in a very good way)
So far I've tried them on Drum buss, 2 buss, electric guitars and drum OH and have been very pleased with the results.
Hope this helps
