I second John's opinion, actually I intended to write the same words. If you don't need 135mm, which is not very useful with rf camera, clear frame of M2 is much less cluttered. For me, I use MP à la carte with the option of 3 frames for the same reason.
For easier film loading to M2 you can look for the quick loading spool from ebay. This works more naturally with M2 than M3 because you reset frame counter manually for M2. Of course there is also a special version of M2-R or M2 KS-15 (millitary) with quick film loading but you have to pay for its rarity value.