Well I have no experience with the Mulit Shot 2-7x32 I do own a Muller 4-16x50 for my .17 HMR.
Personally, I think Muller scopes are a pretty good buy for the cash. I would put them above Tasco or Simmons and even above the low end stuff like a Nikon Prostaff or a Leupold Rifleman. But they are still in my opinion below a Burris Fullfield or a Nikon Buckmaster or that range of scopes.
As far as battery life I had mine on once for about 4 hours of continuious shooting and it still was lit when I put it away...still havent changed the battery.
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