I am using a Panasonic PT-AE4000U (new model is 8000U) and they do auto zoom between different aspects which is amazing useful with my 2.35 screen. Only downside vs processor + lens is the small loss of lumens due to the zoom, but apparently the 8000U is very bright so this is no issue. And sooooo much cheaper !

861v4 with ID40, DSP8000, DSP5500HC, DSP5500, MC200, Panasonic P-AE4000U, SI Black Diamond 142" screen