I have had the G-K NEO 412 for some time now (first gen). It settled in and became quite balanced after about 16 hours of use. Sounded awesome with my old V4B, 800RB, Marshall and now only the G-K Fusion 550. Its been across state lines many times, up and down stairs, in and out of pickups and trailers and never any problems (wheels or otherwise). Hope that helps a little.
First gen was 118lbs BTW and every bassist in my town wants me to retire and sell it to them.
