I like my Sena 30K.
One local guy also recommends Sena. My friend is looking for a set for our next ride. A couple of us are newbies so good communication is a must. There will be a few off-road going to the camping site. I'll be taking the truck to carry our stuff, got to finish installing the new pads and toyo tires this week.
I don't recommend them outright anymore, although it's best to use whatever your riding buddies use as the interoperability between different systems is flaky at best.
Sena 30 and 50 is awesome for big group riding. The mesh system works surprisingly well.
Cardo is good as a 2 and 4 way system and offers great sound with JBL speakers all at a lower price point. Sena has Harmon Kardon on board and a couple of premium speaker options but I'm not sure how they compare.
