That's a huge question.
What do you want it for?
Slotting a 1-4" guard in brass is a huge difference between larger cutting tools in steel.
How much space do you have?
How much do you want to spend?
As already mentioned, the machine is only a fraction. You still have to hook it up and put tools in it.
If you start looking on the Grizzly site, there are more choices than buying on amazon
http://www.grizzly.com/products/category.aspx?key=480
Look for Spindle Taper: R8 tooling they hold the tooling better and , in case you change machines, you can take the tooling with you.
The problem with round column mill-drills
If you want to drill a hole, starting with a center spotting drill, going to longer drills and then a reamer, or possibly a tapping head
the length of the tool bit has to be within the spindle travel. If you move the head, you unbolt it and lose your center location.
It's possible to cut tools shorter if you want
If you find something with a knee, or sliding head where the table move up and down too, you don't have that
I expect to get those features you will spend at least $1000
Search the machining forums, home shop machinist, and others this has been answered hundreds of times by really smart experienced machinists.
If you have the room, you may often find big old full sized USA machines for a few thousand.. a real find.
like this
http://greenville.craigslist.org/tls/2039121825.html