We used to have colletts and were very happy with them and would have bought them again but it was time for new ones. After some research we decided to go with Cardo Packtalk Bolds.They are supposed to be weather proof. You can pair up to 15 riders via their DMS mesh technology and can also connect to other brands via bluetooth.We use the boom mic on our various modular helmets. Only used them for the first time 2 weekends ago. The range seems to be a little less than the colletts but each unit is supposed to act like a repeater and on motorcycles they claim 15 riders can be strung out up to 5 miles and the front can talk to the back as long as each rider is in range of the next one. The voice activation is great and the sound is crystal clear without having to raise your voice to activate them. The battery life seems to be around 7-8 hours which is about 3/4 of a day for us ( if we start out at 7:00 )compared to the colletts which would last all day, but on them, there was a battery pack that we kept warm in our bib pocket and it was large compared to the packtalk where the battery is in the headset itself and much much smaller and is out in the weather/wind on your helmet. So I wouldn't expect it to last as long. If we give them a charge at lunch or a clubhouse visit with a portable phone charger we should be good for the day. Will find out more this weekend.