"Best" is speculative. A simple lip/mouse squeek is often enough for predators within earshot of them. What you have the most confidence with will be what's best for you. Enclosed reed calls are easier to use for a beginner, but are not as versatile as an open reed. They are commonly prey species specific, although you can learn how to use them for a little extra versatility. With an open reed you can produce just about any sound you want, to mimic whatever prey species you choose as well as predator vocalizations. So I'd start with what is easy to be hunting, and start practicing to learn an open reed. Brand doesn't really matter for store bought calls, they will all work good enough to fool at least some predators. Some high end custom calls do up the ante in sound quality, range and versatility, but are not really necessary to begin with. I started making my own split calls in the mid 50's with just a jack knife from a handy piece of branch, whatever I could find to cut a strip reed out of and a little sinew or bailing twine. They worked fine as far as they would reach until I started making and constantly improving the serious calls I made until a few years ago. IMO developing and improving your other skills as a predator hunter are far more important to success than what call you use. Those skills, not equipment (or the camo I never wore) is what got me by just fine doing P&V ADC most of my life.
IMO-YMMV
