If I may chime in here and give my two cents as an owner of both... I had an m105, an m107 and an A13 Solo keeping me company until I got my INH. And I say until cause other than ease of maintenance (INH needs more q-tips and time to clean thoroughly if you need it looking pristine), all other points go to the INH IMHO...
As far as taste goes I prefer the INH's at around 6-7 every day to the Solo's at any temp. As far as ease of use goes it's all INH. Charging and power in general? INH. Stealth? INH. Harshness of vapor? Add a plain straw to the INH and the point goes to the INH again. I would rather not listen to talks about plastic again cause the temps up there are lower than a hot beverage...
About durability now... They are electronic devices so anything can go wrong... If they fall it always depends HOW they fall but INH has more chances cause of the lesser weight and more compact electronics. As far as extraction of goodies go of course the INH is doing a more thorough vaping, I can re-vape stuff from the Solo and get high again using the INH. There are other points of comparison too but for me the INH is a clear winner in most fronts except price maybe.
The only vapes I use these days actually are the Hot Pod for all day usage in conservation mode through glass and the INH for heavy hitting before bed, for slow sipping during a movie and for every outdoor session of course. For a gathering I employ the Pod with a vapor lung though as I can fill back to back bags much easier and faster than the INH...
The Solo serves me as an all-round back up for now and for lending it to friends with needs. I just don't find any reason at all to use it in place of the other two anymore, and I have experimented a lot going back and forth, trust me...