There are a lot of companies which make the laser cut kits, but MM's are the best value of any I've done so far. Very good balsa quality, great instructions, a rabid fan base to get help from if needed, and most importantly the parts actually fit together properly!
My dad is building an L-19 from a short kit he got from another company and is finding problem after problem where the pre cut parts don't fit well or don't match the plans. It's a waste of time and money and he said he'd have been better off just building from scratch. Well, he also should have studied the build thread I did on that same L-19 where I pointed out all the problems! ��. While that may not be typical from all companies it is still something to consider. The three easiest balsa builds I've done are all MM planes.