It's always a good time to invest in a new custom bow! However, that aside, modern recurves should draw more smoothly and shoot with higher efficiency than any of the bows you mention, due to improvements in materials and design since your bows were made. That is not to say that all modern bows will do that, but a lot of them will.
I would suggest that if you want a smooth drawing bow to 29", you should select a 64" recurve that is either specifically designed to draw 45# at 29", or one that draws 42-43# at 28". I assume you are right-handed? Shooting a heavy arrow, maybe 10 gpp, should also help to reduce what little hand shock there might be in a modern recurve. Probably it would be a good idea to keep your left elbow unlocked too, and of course use good shooting form in general, like keeping your left shoulder down in a natural position.