Looking to pick up an electronic caller for hunting predators and varmints at night species in this priority order are:

Feral Hogs
Foxes
Coyotes
Raccoons
Bobcats
Anything else...

I want to get quality but not spend a ton, looking for a single speaker with remote. Really liking the Fox Pro Inferno, lots of good reviews, comes with a pretty good assortment of calls.

Q1: Are there any other calls I should consider in the 200-300 dollar price range?

Q2: any special techniques/ tricks I should try my first time predator hunting?