Depends on what you want it to do.
If you want to set boundaries and walk away, you'll need a GPS enabled collar. They're neat, but I didn't need that capability. Plus they're a little spendy (more than the complete radio fence set up).
I bought a PetSpy training collar on amazon. Cost about $60. I was dubious at first, but after a year and a half, its still going strong. You can adjust correction level from transmitter. You have: tone, vibrate, small shock, big shock.
My dog learned what the tone meant from the radio fence. I needed something to keep her within sight when we get out in the woods (strong prey drive). Its survived rain and mud. I never had to shock her, but that feature delivers plenty of correction if needed. FWIW, a buddy of mine bought one for his coon dog (in addition to GPS collar) and he loves it.
The marketing claims 1100yd reach. I've only tested it out to 350-400, but it worked fine.