The best combination of cost, function and accuracy will be the Savage semi-automatic action HMR 17 varmit rifle David. If cost is taken out of the equation then the CZ 455 series of guns is it. I own a Savage in 17HMR and will not hesitate to put it up against any 17HMR brand/rifle out there. It is a "Tack Driver".

It will depend on what you want it for the Henry will be the most fun but may be the least accurate. the savage is a good all around gun. the T bolt is most likely the most accurate of these I suggest that you look at the CZ 455 series of guns

I would recomend looking into "Alexander Arms" they make a 17 hmr on an Ar platform. If your looking for the best all around that I would say is the Winner!! Of the 3 you have listed the Savage is quite the gun. They have built their new auto from the ground up specific for the 17 hmr. Not just a juiced 22 lr. Hope this helped good luck

It will depend on what you want it for the Henry will be the most fun but may be the least accurate. the savage is a good all around gun. the T bolt is most likely the most accurate of these I suggest that you look at the CZ 455 series of guns