These are great madcowchef!

My 2 cents, ( OK, 1.5 cents )
I prefer no grid, but I don't mind the dark grid. Hate the white one.
The terrain is excellent, detailed, realistic, but general enough to be used for a lot of things.
The 10" x 10" size allows for much more natural looking tiles, and should work great with VTT's, but is not good for printing. 8x8 is better for printing, but then you have less natural layouts. Do it the way you like.
The rivers are wonderful and the waterfall is fantastic.
Looking forward to seeing ( and scarfing up ) more!