One of the main advantages of the Barryvox (which I own for the following reason) is that you can use its analog mode to practice using an analog beacon should you need one. However, real life shows that most people do not practice enough with their beacon, let alone in two different modes!
A digital beacon is probably the best bet for someone new. The Pieps, Barryvox, and Tracker are the most popular (in reverse order, actually, which reflects introduction to market). The Orthovox M2 works too. Other brands such as ARVA also have digital models.
For a painstakingly detailed discussion on the pros and cons of each model, if you do not want to do a lot of research, a forum like that on couloirmag.com, which is dedicated to backcountry, may help. Here is my own short summary of the main distinguishing features of the first three brands:
+ Very clear multiple burial function, with marking off of found victims (very useful to mask their signal while they're being actively dug out)
+ Firmware updates are available (for something like $20 of service fee)
+ Digital mode AND analog mode
+ Very customizable (some people see that as a con, I don't)
+ Even more idiot proof than the others, or so it seems
+ May be better at short range than others
If I were to buy a new beacon today, I would look at the Barryvox and the Pieps, and maybe pick the Pieps for its multiple burials feature. Training on a multiple burial with the Barryvox shows how difficult it can be: there is nothing more frustrating than a seemingly random direction indicator! (Probably when getting from one set of flux lines to another due to signal strength.)
Good luck. Your beacon will only be as good as its user, so train and practice!