I've had a skala Q2 set for a couple of months and can highly recommend them. For me they are near perfect, I can use them for rider to pillion and bike to bike (girlfriend learning!) and they work as they should. I can't be bothered with the autocom wiring and also you need to get extra radios etc for bike to bike which in my eyes was too much hassle. I've read various reviews and decided the Q2 was teh way for me.
The Skala Q2 has fitted my AGV and my Mrs' Arai without issue, and I've never had any issue with the speakers moving (I've simply placed them under the lining without any cutting to the foam etc) and I can't feel them at all. For speaking through the quality is fine, even the radio works and the quality is OK for me. The MP3 jack quality is very poor though.
So for me they are the best I think I could have got - all things considered, but if I was being REALLY critical I'd pick them up on the following:
- Wind noise at 70 plus - although to be fair I imagine this is the same with any other comms such as autocom etc. I'm just use to wearing ear plugs so it gets some getting use too when the mike is open
- Voice activation doesn't always work. I find blowing a raspberry the most affective way! Agai9n, this isn't generally an issue as its only every so often and you can simply press the button on the side of the unit to activate.
- MP3 jack sound quality is useless
- Cost! at 220 quid the Q2 set isn't cheap, but neither is an autcom!
- I do have concerns regarding using it in the rain, but to be fair a friend has one and uses it daily to listen to the radio to and from work (40 miles) and his has never let him down. If I am out and it really starts throwing it down, I stop and unclip the units (leaving the cradle attached to the helmet) just to be on the safe side, but I wouldn't bother unless it was p*ssing it down.
A final point, I beleive there is a newer version coming out at some pioint this summer. Its called the Q4 (dunno what happened to the Q3!).. I reckon it'll be some tiem till it's out on Europe, but here's a link to give you an idea anyway
http://www.revzilla.com/product/cardo-scala-rider-g4
Ultimately, if you want a hassle/wire free intercom that genuinely works for pillion or rider to rider, you could do a whole lot worse than a Q2 I reckon