Seth Lovers are some of the best pickups Duncan makes. Keep in mind that antiquities are just degaussed magnets with some aging, and they cost substantially more. You could easily and with $5-10 buy a UOA5 or other kind of degaussed magnet then age the pickup yourself and save a lot of money.
I've used most of the Seymour Duncan models... kind of a pickup whore. I've used Seth Lovers in a Les Paul and in a strat. Both good. I used to have an Engl Screamer and a Shiva 20th, but never had a lot of noise issues at low to moderate volumes. They will get a little noisy depending on the amp, pedals, and how much gain. What you need to check out are the Joe Bonamassa Antiquities. They are awesome and a bit quieter than the Seth Lovers. I've used the Bonamassa with my 1987x and lots of pedals, and it was not anywhere as noisy as some of the vintage PAF clones I've tried.