You don't have to be sorry for your English, mine is worst than yours, and I'm not sorry at all!
As for your questions:
Reliale and accurate, the 751 certainly is.
Does it offer more than a Piguet or a Zenith?
No, but not less, neither, if the Zenith is not a Flyback ( I have a doubt on this particular point ).
Perfect reset to zero?
Normally, yes, and in a vast majority.
But some owners mentionned this problem, which has been solved after a service.
Give it a 2d chance, because you may be amazed by the different feeling a strap can give to a watch.
But, if you still hesitate, or are not 100% convinced, pass on it.
There are other JLC watches, ( or non JLC ) which may also be a good alternative.
Best,
Nicolas