Max 7 is a Great Camera
The Max 7 is a great camera. It is everything the Max 9 should have been - in features and versatility - but wasn't. I have the Max 9 as well so I know the difference.
With regard to lenses, I mostly use the Tamron AF 28-300 zoom. I have been quite satisfied with the results at both ends of the range. If you can find it I recommend getting it.
I also use the Minolta AF 50mm 1.7 for existing light shots. It has also been good, though of course being a fixed lens I don't get the versality of the Tamron.