Another option is to consider a variety pack of blades. Think Pegas has one. A lot of people here like the Modified Geometry blades... They are a little too aggressive for me for the types of scrolling I do most the time. Don't be afraid to try several types,, several sizes... Heck,, I have over 30 different types/sizes... I use most of them.
And as I am writing, my opinion,,, I see Larry has a sorta different opinion.... Well I don't mean go crazy buying different types,,, but you need to buy more than one or two so you can compare... Just my thoughts.. I did start with a variety pack, and it took me several years to end up with a many different blades as I have not.