The comparisons are pretty much endless -- and not just in the 8x11mm format, where I use the Minox and Acmel/Asanuma -- which is the same size, but adds a focusing lens and automatic shutter exposure control. For 10x14mm I normally use the Minolta 16 II and Minolta MG (which adds a meter), but recently found the MEC SB. It is larger, but it has a TTL meter and a f2.0 Rodenstock lens. For 12x17mm, I like the Minolta MG-s which has auto & manual exposure control, and for 13x17mm, I use a Kiev Vega 2 and 30 -- which have focusing lenses.