I use an MK38 32" sporter and it is without a doubt the best clay gun I have ever owned and would recommend one to anyone looking for a gun for sporting clays.
It is a development of Miroku's trap gun from a few years ago when sporting shooters started modifying them for sporting.Miroku presumably decided to make their own version and introduced the MK38 ten or twelve years ago.It is available in fixed or multichoke versions.
http://www.browningint.com/miroku/intro.html