Me, I like a slender blade profile that's between 2 3/4's and 3 1/4 inches long. I never used to give much thought about blade grinding methods until I handled both (flat grinds vs hollow big wheel grinds) and now I've had a lot of both and prefer the hollow grinds like I've found on Menefee's and Dowell's. They seem to cut better and are easier to sharpen as well.

Dowell examples...

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Some Menefee examples...

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[img]http://i141.photobucket.com/albums/r74/RDFinn/P10000761024x7671024x767_zps1b73d9e0.jpg[/img]
[img]http://i141.photobucket.com/albums/r74/RDFinn/Menefee_zpsd452c62f.jpg[/img]
[img]http://i141.photobucket.com/albums/r74/RDFinn/P10001501024x746.jpg[/img]
[img]http://i141.photobucket.com/albums/r74/RDFinn/MenefeeAmboyna1024x683.jpg[/img]