I looked at that model back in 2008 but did not trust the auto on\off feature in a cold deer blind so I bought the Red/Green model instead.
This was put on my .44 mag three times because the tube slipped back within the rings (.040 then .015) but was cured on the third installation by putting a thin bead of the red locktite on the ring half's.
I have taken several deer with it and it makes for some comforatable and accurate shooting out to 100 yds. The Battery life can be measured in years.
When I purchased mine, I read over 50 good reviews and under five bad ones that spoke of the light blinking out. One gent here at gbo, and on a diff forum, spoke of destroying six of these bushnell Trophy's with six shots. This happened within the last 12 months and when I rechecked the reviews there were 30 good and none that were bad.
I personally think that improper installation might be the culprit in the case of the ones that do go bad quickly. In short, do not crowd the turrent or the lens with the rings. I purchased a Weigand mount specific for my firearm and had no problems with the spacing.
The cons on Bushnell are that they draw a lot of fire when it comes to Warranty as theirs is a Limited lifetime. This is not a problem if you either register your product or keep the original reciept, but if you buy the optics second hand you may be out of luck on repairs.
My bottom line would be the same as the many who bought the Bushnell Trophy as an entry level dot, but then simply saw no need to upgrade because it works great! I would recommend your purchase with my only dislike being that auto on\off feature. There is not any bad reviews on this but will it work reliably in the field?...if so, are you going to have to remove the battery each time you store the sks in the gun safe?...it could be that it has a master switch of course.