Some of the newer beacons run triple ant. that operate dual mode. Meaning they switch from analog to digital at appropriate ranges.
Some of the new models are really user friendly and are easier to successfully use right out of the box.
The new Pieps DSP and Marmmot Pulse use LCD displays and allow for multiple burial marking. The Pulse also displays other Pulse users that are still moving (slight chest movement) on a discret freq.
I use the Pulse beacon and can attest that it very easy to use and has really good range.
http://www.beaconreviews.com/transceivers/
BTW.....No matter which beacon you use...practice, practice, practice....