Re: Gibson 490R/498T set
Welcome!
And to answer the question concisely: Not even close.
The 490 or the 498 are ok pups on their own. They are sort of designed to make 'any' sound or 'every' sound. Generic humbuckers if you will. I could grab a guitar with those and play whatever, and it would sound ok. But once you get into Duncan, DiMArzio or whatever, there is always something better for whatever you want to do. Additional, I and most others here, do not think they sound good as a set. By that, we mean a good amp setting for the bridge will sound bad when you switch to the neck, and vice versa.
They get a lot of undeserved hate IMO. They are solid humbuckers, and can do whatever you want, particularly with a good amp or a pedal or two.
What kind of guitar do you have? What amp? What fx?
Now, PG's....Ahhhh. I haver those in a few guitars. They are the ultimate neck pup for a Les Paul IMO. Should be standard equipment.
If you dig ZZ Top, or great tone period, the PG is where it is at. Some will say that the PG bridge is too bright. Again, I refer to ZZ Top. Does Billy G ever sound too bright? Don't think so. A set of PG's in a good Les PAul is a righteous sound. Can easily do metal if the amp has the power/gain.
What are you looking to do? What sound is missing from your original pickups?