I have worn the 3710 from new since 2001 on a daily basis (it has been tough to replace this watch since it is both casual and formal at the same time). The watch has been sent for service twice over 10 years, and after the first service, sent it back to calibrate accuracy within an acceptable level. No major issues, in fact, the watch has been more durable than many on these boards would have you believe. I would think a little less about the movement or "collectability", specifically, and focus more on which watch moves you more.
Best of luck and enjoy....you can't go wrong either way.
Quick shot of 3710 and 5712.....chance meeting on vacation in Greece.
add in a 5711 on the top left to make it more interesting.