It's an old joke but "ya can have high quality. Ya can have cheap and ya can have it fast.
Pick one"
For dependability, quality (the MB version, LoL) A 4 stroke is better in those reguards more often than not. But it's more expensive. Many folks commute on 2 stroke kits. But there will be some road side repairs.
Not to be a turn coat. But this time of year, you can get deals on used scooters/mopeds.
But then your using/buying a used vehicle with what ever head aches it has.
If ya go the 2 stroke kit route, be sure to read up on 'em. No front fenders, good front and rear brakes, etc. That is well in the $, you set