radair said..
I currently have the 1850, 1550V2, 1250 and recently the 925. If I had to pick just two it would be the 1550V2 and 925 without hesitation. The 1850 is a great foil for light wind days but the 1550 is not too far off. I'm only 70 kgs so at your weight I would consider the 1850 if you anticipate much light wind foiling.
All the hype about the 925 is deserved, just a couple of boat sessions and one wing day and it has become a favorite.
I think the 925 would be good but for my use case I'd get more use out of the 1250 than the 925.
What is your absolute low end on the 925?
I'm 30% heavier than you, so if 20 knots is your absolute low end with the 925, for me it would be 20 * 1.3 = 26 knots, but wind is exponential, so maybe 24 knots, and the foil may stall 30% quicker due to the weight force and the lift equation.
The same foil is different depending on riders weight, and when comparing foils, rider weight is a crucial parameter (as well as surface area) as a heavier rider will exceed the lift force of the same foil than a lighter rider will given all other conditions are equal.
www.aerodynamics4students.com/aircraft-performance/lift-and-lift-coefficient.phpwww.aviationsafetymagazine.com/features/weight-force-the-lift-equation/