Tube Flavor

Whats the best way to get a true taste of different tubes?  Should I change all preamp and power tubes with the same manufacturer?  For instance, I think the best way to truly understand a certain cable companies flavor is to have an entire spool of the same cables, ie all Analysis Plus Solo Crystal Oval 8’s...

I feel like cables, tubes, even equipment each has its own flavor or house sound.  
So, now that Im going to swap some power tubes should I get a matching set of pre amp tubes too?  I feel like if I have 3 or 4 complete sets, i can get a feel for each and THEN start mixing and matching accordingly,

Anyways, this tube stuff is fun and it sounds so dang good to these ears that I wont go back if I can help it.