Garmin alpha or trash breaker and astro

A major drawback with the Alpha, for me, would be that you cannot track the DC 30 and 40 collars.....therefore all the folks that you hunt with would have to have an Alpha system as well for you to be able to track their dogs and vice versa. I have a 220 that I used since they came out and now have a 320 since the first of the year.....I have 3 DC40 collars. I can't tell any difference in the tracking of the 220 or 320......but it seems that I've had less trouble with dogs being dropped by the 320. I use one of those extendable folding antennas and it works very well for me. I can keep in contact with dogs at over 2 miles in rather flat terrain. Plus the 320 has the Birdsyeye which, where I hunt, is the finest thing since a pocket on a shirt.