Wow all the discussion all of a sudden. I guess I will chime in.
Thanks Frank, for the backup. I would never describe anything as a waste of money unless I knew I would not like it or need it before I spent it. I had a weird experience buying ThunderGuts that worked itself out extremely to my benefit when Mimmo got involved (Aquila's owner). My experience with him made me want to be an Aquila customer for life. I put them on and could immediately see why so many prefer this string. More stability, sustain, tighter, brighter tone. I am using the U-Bass generally in place of an upright or an old school thumpy P-Bass. I play a fretless one and strings that have more sustain and harmonics did not fit the tone an feel I am chasing. If stock strings have a Paul Chambers warm thump, the TG's are Jaco. Not that extreme, but in comparison that is the character difference, at least on my bass. Had I not sold my fretted solid U-Bass, I most surely would have figured out a stringing solution for the TG's and put them on there. But now I know, and now I know the strings that point me toward my tone goals all the more. It is a matter of personal preference, and well-spent money. Far from a waste. Justin mentioned that Aquila had solved all his issues with the stock strings. That is not a waste.
I'll also chime in on the preamps. In UB amps, accessories, etc. there is a platinum Pro on sale for $100. I thought about getting it, as it is raved about here, but I have been going a little too Hog wild with gear this year. I realized the other night I am perfectly happy with the tone and function of exactly what I have. I just sold my Radial PZ-Pre (an awesome piece, BTW) because it was too redundant with other stuff I have. For acoustic-specific preamps, the L. R. Baggs Para-EQ is amazing, and Yes it more than handles bass instruments. The frequency centers and features actually seem tailored to a bassist's needs. In all my YouTube U-Bass videos where I am not standing in front of Hanging bar glasses I am using it. It is listed in the descriptions. the VT Bass is also an excellent front end tone shaper. It is not acoustic specific (no high pass or phase inverters, notch filters, etc.) but naturally compresses and warms my sound up. The input is already 1MegOhm so it handles Piezos beautifully. I never leave home without that piece, with any instrument on any gig. I hope someone here picks up that platinum pro for sale.