I own a boat in TMM's fleet (L42), and would definitely bias my search toward their fleet. They take fabulous care of their boats, and I have seen a few too many stories about DYC for me to take those sort of chances. I have done the provisioning ahead thing to my boat (for 8) a couple of times, and it worked out great (TMM received the order, and it was waiting for me when we arrived on the boat) - and the little Rite Way store next to the marina makes filling in stuff that you forgot to order, or just decided you wanted (cookies, beer, etc.) incredibly easy.

Also, I tend to bring a couple of sleeves of burgers, a bag of chicken breasts and some packages of hot dogs (usually from Costco) frozen in a cooler buried in my luggage - just to have a base of grilling foods. Its convenient, and a lot cheaper, and I know what I have got when I step aboard.

I have never done 10 on a trip, but I have been amazed how well 8 did on my L42. I wouldn't hesitate to do 10+ on a 50!

Have fun!