>> I also wanted to know how sturdy the ShopBot is.
Sturdy is in the eye of the beholder.
If you expect to cut 1/4" plate aluminum at full depth, 360 IPM, then forget it. The cutter will wallow like a garbage scow. If you expect to cut 3/4" maple at full depth, maximum speed, you're going to be severely disappointed at the cut quality. If this is your use case, then you should look at a much more robust machine.
If you have patience and are willing to work within the limitations of the machine's architecture, then you will be pleased with the results. Shopbot support is quite good and often available after hours and even on weekends. They will work with you patiently and with knowledge to solve whatever problem you have.
ShopBot Details:
2013 PRS 96x60x12 (Centroid upgrade)
4hp Spindle
12" indexer
Aspire
Rhino
Fusion 360
Ferrari 360
Prusa MK3S+
Prusa XL multi-tool