Are you building wheels, or just truing and maintaining? The Park wrenches work fine, and are well made, but the Spokey is very comfortable to the hand, and is more secure since it grabs 3 corners (and a portion of all 4 sides) rather than 2 as with the regular Park wrench. Like the Park 4-sided wrench it requires you to slip the wrench onto the shaft of the spoke and then slide it up onto the nipple, so that's a little slower than with the simple wrench, but IME the additional trouble is insignificant.
I have both, and I like Spokey. I haven't used the Park 4-side, so can't compare, but I know I like the ergonomics of the Spokey.