I currently have 28 4 blades on my 292 fastech it has 1.65 drives and at wot 5200 I am running 69.I used to get 71 but my props had a few nicks in them so I had them cleaned up by a local shop and I lost two on the top end.It does come out of the hole a little better though.
My question is I have a chance to buy a set of 28 lab. from a member and was wondering if I would see any more top end.What are the advantages and disadvantages of lab vs standard.


Thanks