This discussion asks the same question you ask, in which I answered: http://z3.invisionfree.com/MP2D/index.php?showtopic=1318
I wouldnt be so discouraged by Destroyer F’s frustration with GM 6.1, its true, GM is terrible at memory management but the benefits of ease and speed of creation outweigh the downfalls in memory problems IMO. Theres ways around the memory problems if you’re “anal” enough about your programming, but it can be very difficult.
But nowadays almost everyone has a fast computer anyway … its just up to you to figure out the limitations so you dont go overboard.