Just to throw this out there...
The difference between the 1.75hp and 3hp saws is literally the switch box (120v vs 220v) and the motor*. You can upgrade the 1.75hp saw to 220 any time by replacing the switch box, and you can upgrade the motor to the 3HP as long as you have the 220v switch box... Unlike most manufacturers, SawStop will happily sell you what you need to upgrade the 1.75HP saw to 3HP...
Now I'm not certain on the pricing (IIRC the cost is around $550 for the motor/switch box) but everyone jumping on the buy the 3hp saw or you will regret it train probably isn't taking into consideration that you can just upgrade the saw later for about the same cost as the price difference between the two saws...
*The 3HP saw comes with the nicer dust collection blade guard but that's not really part of the saw itself...
Oh, just to add one extra detail... I work almost exclusively with 8/4 Maple/Walnut stock to make cutting boards and have yet to have my 1.75HP saw bog down on me. I'll admit that I swap between a thin kerf Freud Premier Fusion combo blade and a thin kerf Freud Industrial 24T Ripping blade but it's been handled everything I have thrown at it so far... I'm not saying the 3HP saw isn't totally necessary for everyone but if you aren't out to plow through material at mach 3 you may find that you don't need the 3HP saw at all... Regardless its realistically a $110 gamble (price difference between the 1.75HP + 3HP Parts is ~$110 more than the 3HP outright...) If you can't swing that then you are probably in the wrong hobby anyways