I found for me personally I found that one 1176 was better then 2 for kick and snare rather then one on kick and one on snare. This way the kick and snare live and breathe together. I don't know if anyone else does this and really don't care:-) I've never really gotten into the drum buss compression. To me overheads always suffer. I started doing drum buss compression without overheads and eventually took toms out ending up where I am. I find with TD, eq and automation I get what I need from toms.
EQ- I've used, SSL, JDK, API, D&R, Toft, Purple, Tonelux and more. The API's have that "something". Not just eq but heft. The high end on the 550b's are something special. They do not get harsh. They sound a minute amount lo-fi but cool. Very hard to describe. When I use my tonelux eq's they are very good but they don't do that "thing". The 550b's also seem to compress a little to. After I mix if I do self mastering I use a pair of tonelux and a pair of API 550b's. Together these tamed my lust for a massive passive.
Bottom line If all I had was API 550b's on every channel I'd be happy.