I'm looking for something that can give me a good b-3 sound and all around good trem sound...
I've found the boss tremolo pedal, but is there something else comparable? Can it do a Leslie type sound too?
Hardwire tr7 fits your description exactly. People will keep randomly naming their favorites or whatever they prefer, but the thing you described is the hardwire 100% exactly. Tremolo and faux Leslie in a single affordable easy to obtain box.
After trying a voodoo labs and a supa trem, I profess my love for my stock boss tr2. I would love something with tap tempo but sonically the boss does it for me where the other two seemed a bit 'sterile' to my ears.