Have not pledged anything to date, resisting temptation. I kinda want to snap up one of the M50s for some racing in the future; early xmas pressie to myself. My wallet will hate me
I can confirm the absolute most fun I've had in the demo so far was when they let everyone fly M50's for a week. This coming from someone who hates fast ships and prefers big lumbering death machines.
The ship does no damage with any of the currently available weapons, it's extremely hard to hurt anything you shoot at, but you feel absolutely invincible. The thing is on rails, turns on a dime, blazing top speed. You really feel like an agile gazelle against the lumbering lions in multiplayer. Juking back and forth its nearly impossible to be shot, you can even outrun missiles sometimes.
Some of the best pilots are flying M50s and I think they are going to be real trouble in wolf packs.
After they release more of the shotgun type weapons though this will tone down as the best way to kill an M50 is just to be in something slow and wait for them to come to you instead of trying to dogfight them. They have to get close to hurt you and if you are patient enough you can blap them on the way in.
If you are purely into racing also look at the 350R, which has the highest top speed but turns like a turd. I think once you get used to 'drifting' with the sliding back end of it you can beat m50's consistently on the race tracks.