Mike, just guessing, the reason your edges aren't as sharp as you like may be either that you aren't holding the cutting tool exactly the same angle all the way through every stroke. Or, your tools are dull.
The Beast Sidewall Planer, $40, works well for me.
Don't mix the acuteness of the angle with the sharpness of the edge. .5 & 3 is more acute than 1 & 2, say, but they can be equally sharp.