I dunno - there are a ton of truly excellent freeware out there; but a couple of the default 'planes are quite nice as well.
As has been stated; the DC-3 is quite an excellent aircraft - quite a superb VC on the machine. I also like the DeHavilland Comet - a real handful to fly; get lazy for two seconds and it'll bite you
hard! but that's exactly what I like about it.
Easy airplanes are boring airplanes.

The Comet's insanely beautiful to look at as well - a Jag E-type with wings.
