I love hollow grinds on knife blades because of their beauty and because they most often provide a good spine for strength. Next, I like flat grind blades because of their cutting ability. I do think that flat grinds are HIGHLY overrated, but that's my own opinion and not many share it. I despise chisel grind edges because I'm right handed and most CG blades are ground for lefties. This most likely is because they look better with a grind on the left side of the blade.
My favorite blade shapes are clip point and tanto. I also like the spear point on my CRKT M21-04. The recurved blade on my 5.5-inch Cold Steel Voyager is great for self defense, but for looks I like the blade shapes mentioned. Tanto blades are greatly underrated, in my view. People look at the secondary edge and complain that it wears quickly. That may be true if folks cut with it, but I've always instinctively cut with the tip of the blade so I've never had a problem. Plus, I love the looks. On the new Voyagers, the tanto is the only blade with a strong spine and a hollow grind. Unfortunately, it's also the heaviest knife of the bunch, so that's a consideration. In the old model Voyagers, the tanto was my hands down favorite with the clip point nipping at its heels.