34 express vs 34 sundancer MPG

[flash gordon]

wondering if there is much of difference fuel usage between a SD and EXPRESS????

i had a 34 dancer for six years ,,,sold it 3-4 yeaers ago
looking at getting another 34 but an express...

thanks for any advice

i can ssay , i put 4 blade props on my dancer and at 3000, and was cruising 26 .5 mph
think the four blades reaqlly helped mid range cruising..

thanks again.