I've just bought a bike that came with MT400 brakes. My previous bike had excellent SLX brakes. I wanted to reuse the SLX brakes, but needed new hoses and pads and it all was too expensive to mount those 7 y/o brakes on a new bike, so I decided to sell the bike with them.

I have weak hands (and a history of tendinitis) and appreciate a lot having brakes that are powerful with as little force as possible.

Right now I'm considering replacing the MT400 with the following options:

- Deore M6000 brakes for 89€.
- MT501 2 piston brakes for 87€.
- Dual MT520 4 piston brakes for 112€.
- MT520 4 piston front brake and MT501 2 piston rear brake for 100€.

All levers have Servowave (which I like) and are almost identical (some branded Deore and others MT500). Is this really the case? or are the Deore better brakes? I'm really leaning towards last option, as I'm pretty sure I don't need 4 pistons in the rear, but will probably appreciate them in the front.

Thanks!