So I have an old McLane edger. Found out the other day it has an oil leak. Not sure what I am going to do at this point about repairing it since it is like 7 years old. I am looking at a couple of stick edgers and was wondering if a straight shaft or curved shaft is better. I will be using it mostly for edging around flower beds and sidewalks and drives. I am also a tall so which seems to be better for you guys?