My first one lasted four years and was still going strong when I upgraded.
The Latest Super-Pro automatic I bought was in some ways not so good, it picks up interference, on both the GS and my S10 - even with nothing plugged into the input sockets so I know it is the unit itself. I have tried everything including wrapping it in tin foil, nothing stops this, but with earplugs in you can only really hear it at low speed (still annoying though)
For rider to passenger and plugging in an array of kit it works very well, music is listenable up to 3 figure speeds (with earplugs in) and rider-passenger will work to about 150 on the Autobahn (if you speak up a lot)
Just fitted one to the Mrs bike and installed Radio's, the battery eliminators are very neat and keep cabling to a minimum, but the VOX is utter shite!
I cannot understand how the VOX works perfectly two up, yet just fails with the radio's, each time we try it may work from one bike, or the other and once worked perfectly for two minutes when parked up - but as soon as we are moving your down to one bike working at best - and that rarely lasts.
PTT is obviously the only way to go, but with two Radio's, two battery eliminators and two PTT kits it is a huge expense - although I am sure the ease of use and no hassle pairing / charging or worrying about range will make bike-to-bike as sweet as rider-pillion.
I was lucky in getting a second-hand autocom (of this very forum) at a good price, and picking up two used radio's off E-Bay, but from scratch it is a very expensive bike-to-bike solution, especially as the BT gear is getting better and cheaper all the time.
But as stated for rider-pillion and music clarity I do not think they can be beaten - and the earlier Active Rider kit is pretty decent, get one off E-Bay and just re-furb the Mic's
