Zoran, When you open the box, the Mammut Barryvox is a digital transceiver that is simplicity itself. Turn it on, and you are transmitting, Push the large mode button three times, and you are receiving/searching with digital arrows pointing along the flux line of the strongest 457 hz transmitter. IMO, that is all most of us need. If you can advance your skills, the unit is customizable to use both digital and analog.
The easier a unit is to use, and the faster it can help a novice home in on a target, the better. So, the Pulse represents an advancement from that perspective. Personally, I would question going into any risky terrain with a partner who had no experience and had never practiced with a transceiver; even if it is the best one on the market. You still need to know how to operate the unit, set it to receive, and hopefully follow a standard search pattern to obtain a signal to follow (Not to mention rescue protocols and group organization). I have been in BC and met people that didn't even know how to deploy their probes. So I won't replace my current unit, and would be hard pressed to spend the additional $100, even if I was buying my first one. I just think there is a deminimus skill level one should have before ever doing this, and of course there are many in the backcountry that carry no gear or knowlege, and they do surprisingly well at defying the Darwin principles.
A transceiver is sensitive (in receive mode) to interference from certain electronic devices like radios, GPS and cell phones. As a result, I don't expect to see additional devices built in soon. Besides, adding controls, and features would defeat the first objective, which is to make the unit as simple as possible. I would hate to be in a rescue situation, and lose time by accidently turn on the wrong device.