I like that Leica keeps the selection of current Disto models small. E7500i and X310 can still be had thru retailers but they don't appear on the Leica website (catalog) anymore. From the current catalog only D1 and D2 are within my budget. The D2 seems very simple compared with the UT395?-series let alone UT396?-series. Of course, the X310 is the more professional model than the (more uptodate/accurate) D2.