it took me a long while to decide bet the 4bsst and 3bsst.
I think if to buy new, the 4bsst would have done it. But i had a chance to get a used 3bsst for just a little over $1k.
Even w/ that deal i was really contemplating on the 4bsst because of the power. However, when practicality set in, i just took the 3bsst.
I dont think i will ever fully exploit the power of the 4bsst to its max, so as the 3bsst.