Keith,
I had a smaller Little Machine Shop(LMS) mill before, but it doesn't compare to the 0619. The 0619 is much sturdier and the X & Y axis leadscrews are 10 TPI instead of 16 TPI, like the LMS machine. 16 TPI is a pain!
I'm glad I added the Z-axis motor. It makes it much easier to move the head up and down, no more endless cranking. I like the fine control on the Z-axis too. You can dial in very precise depths, in combination with the built-in Z-axis DRO. All in all, I would highly recommend this unit, over the smaller cheaper machines.
Although you will probably need a lift to get it up on the bench. It's pretty heavy.
Dave