Overall I was impressed with the MX420. The sounds out of the drums are pretty good, considering the price. A standout for me is the quality of the hardware at this price. Often the downside of any budget is weak or unstable hardware, but this stuff is pretty solid. The cymbals are pretty rubbish, but I wasn't expecting much. Actually, the high hat is useable, but the crash and ride have excessive ring and volume.
I prefer a setup with a single high tom on a stand, rather than mounted through the bass drum. I was happy to find that the tom mounts have the same diameter as the cymbal stands, so I was able to hang the tom via the crash stand.
Pros:
-Drum sound
-Hardware
-Finish
Cons:
-Cymbals
-Seat isn't amazing