LSV would be my choice (keep in mind I work at a SC dealer but we considered MB before SC was available) both are nice boats but overall the LSV is more comfortable to be in, just engineered better IMO. The MB throttle didn't feel smooth (could have been just our boat) or overly comfortable.

I loved the quick fill ballast of the MB but for surfing it was not enough. We were out in a Tomcat and it needed another 750lbs in the corner to really get a nice surf wake, no easy way to plumb this in where as the LSV allows you to simply swap the bags. With the LSV you can run anywhere between 0 and 100% ballast, the MB is tough to run below 100% full. This wasnt a huge issue for me as we always run 100% full but if you have kids or newbs it can be nice to dump ballast to get a clean wake at slower speeds while still having a nice sized ramp.

Loading and unloading from the trailer was a pain in the MB, ours literally got stuck on the trailer because the tracking fin would snag a cross member. Shimming the bunks would fix that.

From a dealer standpoint one of the things we struggle with is getting parts from smaller boat lines. I have not dealt much with MB but with some of the other small guys even getting small parts can be a struggle. In particular we battled with underwater gear from one company and another wanted to sell me parts to fix a customers boat at MSRP (including the ACME prop that is available for less than MSRP at EVERY ACME dealer on the planet). To me the MSRP parts to a dealer when no local dealer existed in the 3 state area was just ludicrous. Again, not saying this is the case with MB but I would consider dealer/parts support when buying a new boat.