I'm glad your experiences with Shopsabre have been as positive as mine have. They are a good group of guys and their machines are excellent.
I bought a 4896 in 2003 and have put a lot of miles on it since then. It's just a plain model without a TC and I still use a PC router for a spindle. I cut mostly small, close tolerance parts with it and it is still as accurate today as when new. I make my own vacuum fixtures to hold the sheets of material and the parts.
The only problem I've ever had with it (knock knock) was when a near lightening strike popped a chip in the PCI card from a power surge, but they were quick to get me a new one.
May yours be as trouble free as mine has been.