Well had it for a couple of weeks now but not had much chance to get out with the weather and Christmas,but we had a day or so with them ,They came pre-paired so that was one less fuss,and to be fair i think there a big step from the F5mc especially as we can chat and have music on in the background, the speed dial option is good and clear,some of the voice commands can take a bit of getting use to but its all a learning curve,the large buttons seem pretty eay to use but i did have my thick winter gloves on which made it a bit clumsy for a while,The range is not too bad i dont think its much improvement on the F5 but were either riding together or rider/pillion,I didn't buy them for group riding so Im not sure if its mesh thingymajig,The app(mines Android) as others have said is basic but if you want to adjust settings on the move or store radio stations,its all i need.We both have flip helmets and the boom mikes are ok,on my F5 i had the short fixed mike which worked well and didnt get trapped in the chin curtain when you closed your lid but unfortunately there a different plug then the new one so i might see if i can solder it over.The speakers arn't JBL's but there pretty good ,we both have Neotec 2 so theres not much wind noise.
So yeah all in all Im pretty happy with them, i dont know if anyone else has them as there seems to be a lot of problem questions regarding Senas and Packtalks lately so im presuming the Interphones are an acquired taste.
When the weather eases up a bit i'll try and get out with the wife and get a bit more use out of them and let you know if theres any cons.