Stoli
Apologies for being an ass and calling you dude.
But basically this forum is a good start, and it will take you some time to research. The reason being is that there is no single answer to most questions that you are asking, but let me try a few things.
1) The best H replica is this
https://puretime.io/big-bang-44mm-steel-2011-on-black-rubber-strap-hub4104.html. I am not really familiar with ladies H replicase to be honest, like not at all.
2) When buying a replica, my greatest advise to you is to buy from a TD (trusted dealer) on this site. Reason being is that those TDs they have reviews. Which is like the closest thing to buying on amazon or something. Buying on shady sites you can pay $500 and get a $100 crappy replica that will look absolutely nothing like the original one.
3) There is a TD section there. My TD is either Lucy or Sead (super mirrors). They take a while to respond though. Find this section on the first page of the forum, read reviews.
4) Send them a pic of this watch that you want, ie. one i provided in item #1 above. And ask them for availability and the price. They will give you that information, you pay them via western union (don't pay credit card, you will be charged fees by the bank), then they will send you a pic of the watch that they will send you, actual watch. You check it for quality, and approve. And then they ship it to you, quite simple.
5) If anything goes wrong you have support of this forum. Like Sead sent me one watch once which was all banged up (TDs are not perfect), and because he is a trusted dealer, he really had no choice but to take the watch back. Good luck doing that with anyone else who is not TD here. Also, you have support of the forum if you are a member and buying from a TD.
6) These watches will work for more than a year. They have fine mechanisms, so like if something breaks, you can service it. My Audemars piguet is in service now for $150 I will get a working watch back.
So here is a summary. Buy from Trusted Dealer (not for the service, service will be just OK), but for the quality of the watch. There are different factories that produce watches, like underground factories in china. some do shitty job, so do good job. If you buy that watch in item #1 above you will likely get a good watch. If you buy from anyone other than TD they will send you nice pictures, but in the end you get crap, and will be stuck with it. TD's are trusted for a reason. And the watch should work for 5-10 years. And the model that listed above is currently best rep, I think.
hope this was a bit helpful...