u/Ill-GirlsGunsandGum

Hey guys, I have a few 5.8 fpv cameras that I use on my crawlers and rc tanks (and hopefully soon my rc boat). However, managing the controller and viewing screen is quite the juggling task. I know there are goggles available but I’m dorky looking enough without adding more ammo…so I was looking at dual controllers and my questions are the following:
Are there any good sub $300 ones?
Can I get one and have it binded to more than one rc vehicle (like have it to my crawler and tank and maybe even boat since I never use all at once?)
I’ve never actually switched out a controller—how hard is it to calibrate the ESC when doing it (if it is a daunting challenge then I may just avoid altogether)?

Thanks in advance!