I think you are correct, the Senas may be the best unit. I do see that the one's I provided the link to can link with three unit's but only two can talk at a time. What that means I have no idea? I do know that for a small crew if I "could get by" with these it would save a big hole in my pocket.???
Still looking for thoughts or hands on time. I thought I saw these in use on a youtube vid from one of the big boy's but not 100% sure.
You know.. not for nothing but if your trying to get away from the higher cost of the Sena units & your going to have to retrofit something anyways, id look into some motocycle forums.. Naturally, I think those guys use these types of devices more than anyone else & probably have the Low Cost game figured out.. Of course within that crowd there's gonna be the Brand Loyalists, but i think you may be able to find a decent dialed in system at a significant cost savings..
Personally, with the Sena's i feel like I'm paying for two main things that have little to do with user to user communication.. That is.. Name brand & media consumption. I feel if they just focused on user to user communication, the whole experience would be allot better, more user friendly & have the actual reach they want to claim they have.
Idk.. i know some ppl love them.. i did as well at first, but quickly realized their shortcomings, the fact that no one on the crew could figure out how to use them fluidly on a daily basis, if you walked behind an object 50-70 feet away you'd lose contact & if just one was forgotten to be charged at night the next day was a disaster depending on which one it was. The whole distance thing really pissed me off though.. they market the shit out of their range & make HUGE claims of 980 yards, yes yards! Yet i can't walk to the front side of a building or home without losing contact to those out back. You'd figure being that close & only 60-70ft into that 980yrd range the device would work no matter what, period, full stop.... I mean what is that.. not even 5% into their marketed range?
Anyhow.. i get carried away on a fucking rant everytime these Sena's come up.. especially now that i see their pushing them for commercial builders where the exact conditions these units fail to work are going to be experienced 90% of the work shift.. Like being up 20 floors & behind a wall trying to talk to your forman on the ground..etc.. scenarios like that.. I would expect & accept that type of functionality from a $30 china town knockoff, but not from big name stuff costing $150-$450 a pop.. it's just not acceptable in my opinion.