Yes There are many people here who have the Grizzly 2x72 belt sander. I have one. It is a fine beginer machine but you should take these things into consideration. This machine runs very fast with no reasonable way to slow it down. The speed is much to fast for some operations. You will find yourself burning up wood quite often if you are not very carefull. Next because the contact wheel is on the drive of the motor (direct drive) the motor can be in the way for hollow grinding. Some people still hollow grind with this machine and you can get a bigger cotact wheel that will make it a bit better but it will also make it faster.
It comes with a crappy platen liner stuck on the platen you will want to take this of right away.
There are vents on the underside of the motor. These need to be coverd with some sort of filter otherwize dust can build up inside and destroy it.
With the Grizzly belt sander you get what you get. Unlike most other grinders the Grizzly can not be used with smaller cotact wheels and it can not be slowed down.
Consider this it is the cheapest complete 2x72 belt grinder/sander on the market. You do get what you pay for.