If he’s choosing between breeds, a huge consideration are any grooming requirements- many people I know have chosen non shedding dogs without considering the cost of grooming ($100+ every couple of months) and brushing needs. Golden retrievers need to be brushed often (one of the reasons I ruled them out, but at some point in my life I would like one). Although labs shed, they dry off fairly easily whereas my friend with a labradoodle has to bathe off mud and it takes ages for him to dry completely. Tell him to chat to many breeders!
Oh my word yes - the three people I know well who have doodles spend ages and a fortune keeping their fur in order. Two of them have given up going to the groomer and do it themselves... with mixed results. Also they are CONTINUALLY cleaning them - my sister lives by the river and her lovely goldendoodle is always filthy and smelly. Always. Doesn't help that he is white... And friends who live down our road with a gorgeous labradoodle have to either put her in the shower after a walk, or pick ice out of the fur around her feet, or (horrors) pick endless ticks out of her fur. I kid you not - they stopped outside our gate to chat after a walk in the woods the other day, and while they were standing there they picked FIFTEEN ticks out of her fur. Shudder. Of course, I am jealous when Poppy is moulting and we have mounds of dog hair in the house... but no, I would never go for one of the doodle versions, despite their lovely natures (all of the doodles that I know have great temperaments); the grooming requirements are just too much for a lazy person like me. All we do is give the labs a quick toweling off when we get back from a walk, and a brush once a day when moulting.
If I were to look for a puppy, I think I would look for a labrador breeder with quite small dogs, where the parents don't have very thick fur, and I'd get a female. (Except of course I'd probably end up with another huge male lab like Merlin, who I love and adore). I'm also quite partial to jack russells... and border terriers get my vote. As you can tell, we talk about this quite a lot!
Rottweilers are actually much maligned dogs; if well-socialized they are lovely. But you do face a lot of prejudice and that could be quite unpleasant, especially for a first-time owner. Golden Retrievers are lovely dogs, a little more soft-natured than labs, but quite large.
So exciting!!!!!