Thanks all, again. Great points to consider.

After looking at Clyde Butcher's work online, I have the "go big" bug if the print warrants it. The funny side story was that I was no more than 10 miles from his gallery/darkroom in 2010 and did not know of him. If I did, I probably would have stayed in Venice and offered to sweep floors to hang around!

I would imagine 16x20's and 20x24's for upscale portrait work from a 5x7 neg. Larger for a truly good landscape, 11x14's and 8x10's for run of the mill stuff.