[Holbs]

Since first jointer… I would skip all 3 and look elsewhere for a $150-$200 Craigslist jointer. You will eventually go for a 8" after a number of years. Or maybe not. But 6" jointers are dime a dozen and I can find good ones locally for $200, not $500 used.
Or maybe you simply want a brand new jointer, like that Grizzly

 

[Holbs]

AJ… looks like 4" boards (done via his 4" jointer) glued together to make a panel

 

[Holbs]

Here is a picture of my now gone Rockwell 6" jointer vs my current GeeTec 8" long bed jointer. You can see why I have a much easier time jointing long boards with the long bed jointer. Though, with the Rockwell, I learned alot. Such as how to use a jointer, setting knives, etc. A great beginner jointer that I would never of paid $150+ for.