I was assistant Mechanic for 4 different golf courses mechanic I had use 4 different grinders for Reels & Bedknife.Neary,Dual Express, SIP peerless and Foley.They all give u a list for angels.Like Hector say it depends on the golf course grounds conditions and what type of grinder you use.My opinion is SIP grinder and bed knife grinder is on point (fantastic) tough set up but a truth grind wit attitude.Thanks Hector for your videos keep them coming….