I never had a 150, but I still have a 75TC, two Sparks, and a Mini Book. The Mini Book and one of the Sparks are still used regularly, the others are packed away but still work fine. I had one other Mini Book that I gave to my sister and she promptly broke it. That was her second.
The first four box mods I ever bought were Sigeleis. I decided to go with Sig because at the time they were about the best you could get without breaking the bank. Number five was a Kanger Kbox Mini Platinum that I still have and use occasionally.
This was my second mod I ever purchased after an Eleaf IStick 30w. I put a wrap on it on day one, and it looks as good as the day I purchased it for $80.00 on vapenw. Still works fine, and I guess ill keep it for vapocolypse 2019.