Re Tunelab pro and 97.... essentially the same program! So if pro works for you (with timeouts) so should 97!!! In fact, you can run them simultaneously, just to double check the accuracy of your IH measurements.
TL is as good as you will get in free tuning programs; in fact, ALL of them (save Verituner) work pretty much the way TL does: they produce a smooth tuning curve based on the individual IH measurements of your instrument. (May be Cybertuner is different, can't say for sure.)
The limitations of this approach are that while your temperament octave (A3-A4) will probably sound OK placed on an idealized curve, the entire piano tuned that way will sound less, sometimes far less, than "reverberent" for want of a better term.
Verituner is the only program that I'm aware of that actually calculates precise (non-linear, non-idealized, non-smooth) tuning curves. Thus, every note's ideal tuning is calculated on the basis of its relation to every other note on the piano, and you get a typical tuning curve: jagged ups and downs off the smooth, idealized curve, which is what you get with a pro-tuner.
If you intend to spend years and years at the piano, and would probably spend over 600 bucks (or thereabouts) on pro tuning, Verituner is worth it. Once you get the hang of tuning, it is not hard to keep your piano in perfect tune ALL the time.
Contary to what I've heard SOME (not all) tuners say, learning to bring each string of the piano into tune is not all that difficult. The MOST important point (well, 2 points) is 1. do NOT flagpole the tuning pin, thereby wrecking either slowly or quickly the piano's pinblock; 2. do NOT tighten to reach the target pitch; rather ease into it from above the target pitch. Also, please use a top-notch tuning wrench. For uprights I think it is settled opinion now that hammer levers prevent flagpolling.
On Verituner: quite frankly, the program is OLD software, but it can work MIRACULOUSLY, better in my view than all but the most accomplished tuners. It takes finessing to use it, but once you get used to massaging it, the results (in my view) are superior to anything you are likely to get from an old-fashioned tuner. Unisons, which are pretty easy to realize on TL are super-precise on VT. Also, you get an end-result that "sings", or "resonates", for want of a better term. The piano (my experience) becomes a different instrument, literally.
But, IH measurements, and careful mic placement are very important. Once you've used it for a couple of years. Also, as you've probably figured out, C8, B7, and A#7 (ie the top three notes) are HARD to tune on ALL programs. TL (not 97) may do a slightly better job than some!!
Surprising that no high-end shareware or open source piano tuner has hit the market yet. It could be that Dave Carpenter of VT has hit the nail head with his program and that there is absolutely no way to duplicate it without copyright infringement.
OH.... here's my Hailun 218 tuned by me with VT (Verituner)
https://www.box.com/s/cilx8e6kug0zx4p23pkxJG
Topic: Tuning Software