while you will never "need" a 10 inch wheel,,,,,the fact is I wish i had one for mine...
The 8 inch wheel is not far enough away from the motor and so doing some things with the blade will cause it to rub against the motor,,,thats a pain....
The biggest problem with the grizzly?...well, in my case I didnt know any better and I mounted the wheel right over the workbench,,,,this is wrong!
You need room!,,,you got to keep the wheel able to spin with nothing underneath it...The problem for me now is that to re-mount it is a lot of work due to the many bolts the thing has got on it to hold down everything to the bench..
The othe problem I have with my Grizzly was only found in the set-up....Clearly the people that wrote the directions have not any understanding of the way english is writen,
also, I ran into a big problem with a few pre-drilled bolt holes that were not drilled in the right spot, and I had to drill them out better...
but,,,,past such problems, the Grizzly cant be beat for the money,,,its strong,,,its got a built-in buffer all ready to go,,,,and it changes belts fast...
You can also lay the arm down and sand flat-ways if thats something you want to do ...
for less that $300 you get a good belt grinder that even if you later on, bump up to the better grinders, the Grizzly will still be there to handle the other jobs..
If you got more that $290 to spend, then go for it and get the better grinders,,,,But in my case, $300 was the limit and not a dime more could I invest .