I don't know where you asked but I would not say it's equal or better than the Solo. This vape has many good points, as you said form factor and stealth, transportable without risk of breaking the straw, but also excellent battery capacity, quick to heat, easy to use and to maintain... but it only has 3 temp settings that are on the high side, a very short vapor path, and yes taste is not the best (due to the high temp and the full-on conduction/radiant heat design)
Your Solo has some convection aspects, a longer vapor path and can do lower temps. The FM5.S on "blue" is like starting your Solo session on level 4.
I hope you are not too disappointed but don't forget it's a cheap budget vape. Did you do the empty burn-ins? Mine needed a lot but now the taste is not the best but not that bad either.