I had a previously owned, old Ace 101; I didn't bond with it (not knocking Ace, I like, and own, other stuff of theirs). Ended up rigging my own: I used the Ace frame as the support and spin tester, and a set of digital calipers from an auto parts store to measure deflection. Works just fine.
If I were to buy one now, I'd still go for the lower priced Ace. Or, I would rig a simple home made spin tester/support, and stay with the digital caliper for readings. Probably cost about half as much this way. The 2 lb. weight should be easy to come up with. The Ace would be more convenient, the home made =, I believe, just as accurate, bit a tad slower to use.
Pretty sure there are some threads, if you search, for ideas here.