I have had and used both... IMHO... the radions are everything the AI are and then some... yes they use the same LEDs but the radion give you full controllability at a full spectrum level... AI does not... I do feel they will be changing things w/ this new model coming out even tho they are still keeping it at release w/ the same white, blue, royal blue, so, recap radion full spectrum-AI whites and blues you make the decision which is better there...
on to controlling side of things... radion allows basic, but extensive controlling right outta the box... NO EXTRA controller to buy...+ yes, also one less thing you have to find a place for and mount as well too... how ever ecotech do allow you to control it further by connecting it to your PC... now is when you here the nah sayers say,"what if i don't have a pc to connect it"... well my response it then your in the wrong hobby... ;-) further the software was soooo easy to play w/ i could've had the artificial programming mode done in like 30 secs...really fast is alls im sayin here...
lastly is the spread... no way could i get by w/ only 2 fixture on my 4' tank w/ AIs even if i turned them sideways...decent coverage if it was only 18" front to back tank... on a 120g tank you started to loose cover pretty good... Ecotechs AWESOME... easily get these to cover a 120g tank w/ only 2...
lets talk price at first glance the AIs w/ there price reduction finally appearing more reasonable looks to have the ecotechs beat, until you realize you have to buy a couple more for your 120g tank realizing you really need atleast one to two more... once you factor that in its really a wash... but remember lighting wise the ecotech and everything the AIs are and then some...so cheaper per unit AIs got you beat ecotech but once you figure in the performance of the coverage of the ecotech right back into the race...in my opinion a wash then...also don't forget to add in your controller expense w/ this too AI owners... you don't have that w/ Ecotech
service after the sale... again ecotech has ALWAYS BEEN GREAT!!! C2 AI, I wish i could support this local company but i just can't they have had a heck of a time keeping up w/ the demands of their following... you can't sell products you don't have at your vendors...please i can only imagine the frustration some of the AI owners felt when they unrolled a substantial price decrease... I think that C2 has only seen the ripple effects of this and i think if they are to keep their following for the future and remain competitive they need to play damage control and PLAY Politics here... the message i got here is that alot of people that just bought AI unit felt a lil dupped
if i sound a lil one sided it is cause i have used both owned both, and I feel the better product hands down is the radion from all angles even price considering you get 5 channel controllability and full spectrum and you don't have to buy a controller and extra units to get the coverage your looking for... if LEDs are gonna compete/and eventually replace MH, they need to be FULL SPECTRUM...
hope this was helpful, I know it is a bit lengthy but i felt i could give any honest evaluation since i did fit the discription of what they were looking for...
god bless and have a happy thanksgiving