I've read the Bolitho, Hornblower, Aubrey/Martin, Novak (some), Dudley Pope and a couple of the Kydd series. Novak's is just fantasy in an historical setting, I got through two of them and gave up not because they were bad but rather they didn't meet my interest. Hornblower novels are classics and as such are written in a style that is a little dated but still excellent, Bolitho (by Alexander Kent which I think is a pseudonym of Douglas Reeman?) were favorites when I was younger but probably went belong their design life! Aubrey/Martin novels are great literature, highly detailed but can be slow at times nevertheless I think they give an excellent feel for the period.