Between the two cameras the IIa is the better choice. Not only does the meter on the IIIa add bulk, but the bulk is largely useless because the are seldom working and even when New were not that good. I also have a IIIa and very seldom use it. Since I almost never use flash, black dial is fine.
Don’t be put off by a CLA. Unlike certain cameras that required a malfunctioning camera to be sent back to an official authorized repairman, the Contax manual simply states to have camera repaired by competent repairman. Recently had both of my IIa serviced.
One tip. After WWII German camera companies lost patent rights while at same time US policy was to enhance Japanese industry. As a result, Nikon ‘c’ lenses optically are just as good (sometimes better) than Zeiss, and lens barrel construction was much better and have held up better. Note, because Nikon rf flange to film distance is not same as Contax, a suitable lens must be engraved with a ‘c’.
