I run the older Rectoverb 50 and I keep my gain between 11:00 and 1:00 with a Fulltone OCD overdrive and a compressor pedal at the front end. I can get all the gain and sustain I would ever want with just those two pedals.
Pal, I've been playing 45 years and have used Peaveys Marshall JCMs, and settled we with a Mesa Rectoverb 50 watt combo with a 2x12 rectifier extension closed back cab and I tell you I dont need anything else in a club setting. Headroom for cleans and breakup blues plus the option of a high gain...