It's odd because the 140 was the successor to the 110. In fact many 110's were converted to 140's by the factory simply by retrofitting the 140 power supply board in place of the single pairs of capacitors the 110 had. Having said all that it's a very musical little amp and a worthy addition to any system. The 42.5 is a very good little pre-amp, often overlooked but one of my favourites.
Hold out for a 110. Having had a 140, 180 and 250 it is my favourite. Also if you like it you can go mono with two which was my upgrade from the 250.
(Having said that I preferred one 110 to a 250 so long as I wasn't trying to play very loud)