I love my RC Booster. Ive had it since 2005. Thats my "clean" sound, it just makes my cleans bigger and bolder no matter what amps I play thru. I use backline amps almost every week when I travel and the RC just delivers it everytime. Its also great if you just want a little hair on your sound.
I know not every pedal is for everybody but I also believe some people that tried the RC and did not like it expected a certain sound that the RC wasnt meant to do. If you need an overdrive get something else. If you need to fatten up single coils and add some hair while still keep the chime this is it. I also like it with neck humbuckers where you can take some bass away, add some treble and control the output. Have some hot neck pickups and need a cleaner but still fat sound? Just keep the level down.
Its the second oldest pedal on my pedalboard.