There are a lot of e-callers out there and over the years I've called a bunch of preds with quite a few of them, while Foxpro isn't my first choice it is the caller I recommend for a first time purchase. I usually suggest a bottom end FoxPro w/remote, it holds more calls than you usually need, is reliable, has good technical support, depending where you buy it you can get loaded with the sounds of your choice, good sound and resale value. After you've put some time behind your caller you can figure out just what you need, every ones hunting style is different and has different requirements.
I tend to gravitate to tighter cover and walk to a few different stands before returning to the truck and a M-1 Bandit or Scorpion will cover 90% of my e-caller needs. Portabillity is important to me, I'd rather hike closer to the coyote than try and draw him in from a long distance.