Depending on your budget and number of channels needed there are enough radios out there you will probably get a headache trying to figure which one. If you like Futaba then by all means stick to them.
Many years ago I had the same problem with two identical transmitters (Futaba) and switched to Hitec (FM at the time and Hitec worked with Futaba receivers). I ended up really liking the Hitec stuff and found the prices were more than reasonable. I now own Two Aurora 9 transmitters, one for electrics and gliders and one for combustion powered. I buddy box between them easily. Dependability is in my opinion outstanding and service has always been top of the line with excellent turn around even from Canada.
That being said I own an Airtronics, Spectrum and JR. I won the Airtronics and JR but bought the Spectrum for bind and fly and I must say they have all performed well.
Good luck with choosing. Radio preferences are like discussing oil choices hang on to your hat it might be a wild ride LOL!!!!!!!!!!
Dennis