When I was researching the HSU's the STF was always suggested as it was so close to the VTF (but cheaper) except for having the tuning capabilities. I questioned DR Hsu in an email and he suggested for my application I would be more than happy with the STF. I ended up finding the VTF for a price I was willing to pay so decided why not go for the big one (at that time).

You should be very happy with your choice.

High Gloss Cherry
M60 VP150 QS8
Open for Auditions but please don't drool on the High Gloss