I get that people want puppies rather than rescues for all sorts of reasons. Maybe they want a specific breed that isn't available in rescues, or they have young DC so a rescue won't rehome to them, or whatever. Fine.
But to say that you don't want a rescue because it has 'history' and you have enough to cope with is just nonsense. As many people have pointed out, many rescues turn out to be dream dogs and many puppies turn out to be nightmares. If you can cope with a puppy, you can cope with a rescue.
You say you're doing research - if you're serious about dog ownership, I would suggest that visiting a rescue should form part of that research. Maybe you won't click with any of the dogs, and that's fine, but if you rule it out automatically because you don't want somebody else's 'second-hand' dog then I would question whether dog ownership is right for you.
Btw we rescued. 1yo dog and she is wonderful.
Friends of ours did their research and bought a puppy after endless meetings with the breeder and meeting the 'mother'. It turned out to be a well concealed puppy farm and the dog is horribly damaged and anxious, and they have spent a fortune on behaviorists etc.
My NDNs are breeding their (pedigree) dogs. If you met them, you'd think they were lovely and well above board. The reality is that the breeding dogs spend all their time in the small back garden, never walked, never played with. They got a litter out of her just in time for Christmas and I assume those puppies have already been sold (bar the dead ones obvs) as I've never seen them and the mum is now back outside all day, sometimes in sub zero temperatures.