The Mk-85 is a outstanding Value and they are not making them anymore. Probably one of the better if not the best #11 ignition systems ever devised.
The ultra Lite is a outstanding MZ and very practical with better lock time over the MK-85 and will probably yield better accuracy all barrels being equal. But with it comes a price tag.
The MK-85 Comes with the standard Williams Partridge Style Sights which are Excellent but I think you prefer a peep sight so you will be making a additional investment in that so there is that to consider. Add about $75 to $100 for that on top of whatever you pay for a Mk-85.
I would tend to lean towards a Ultra Lite but I would not turn down a MK-85 if the price was right.
Last edited by edwardCVAmason; 12-24-2013 at 05:40 PM.