Really it is a no brainer, Hamster 1.0 has softer feets, they get sore faster and he slows down, Hamster 1.0 wheel does not have sealed bearings and so his lil wheel gets gummy and hard for him to keep it going with softer feets.
Hamster 2.0, tougher feets, sealed bearings, more uptime. Really it is a no brainer.