I agree with your statement. The majority of systems we install contain TXVs. Although, I always feel comfortabe with an orfice because it should not fail. Less mechanical parts could possible save a call back.
Originally posted by chillbilly
There are 3 conditions a coil can assume;
Either type of metering device can control refrigerant to maintain proper superheat and subcooling.
The TXV is a more precise regulator of refrigerant flow, however I've never had to replace a flowrater piston due to failure and I can't say that about a TXV.