Wow - that's crazy, those were the first two knives I bought from Spyderco (together). I specifically bought those two because they were on the opposite end of the spectrum and I wanted to see a good example of both a larger knife and a 3" pocket/EDC knife from Spyderco.
Both knives are made in Taiwan which means top-notch quality fit/finish. Both knives were flawless in every single possibly way when I got them. Both have the same carbon-fiber scales on them (very nice - just grippy enough to be effective, but still very attractive). Both came razor sharp w/polished edges, and both are liner-lock models.
The Gayle Bradley's locking liner is probably twice as thick (at least) as that of the Sage's, and the blade-shape is more of a traditional drop-point/spear-point with a spyderco thumb-hole stuck on the top of it (very thick spine).
The Gayle Bradley was honestly just too big for me to EDC. It is deceivingly large/heavy as when you pick it up, it doesn't feel as "big" as it is on paper (if that makes sense), but its very much larger than any of the videos or pics I've seen on the net.
The Sage is quite possibly the perfect carry knife for me (I like 3" knives). The choil and thumb-ramp are nearly perfectly placed/shaped and while the blade is a bit thin at the tip, I don't have a need to pry with it, so its not a big deal for me. The wire-clip is very cool as it allows minimal exposure while sitting very deep in the pocket. The Ergos (when opened) for this knife are just about perfect for me (I have medium-sized hands) and the knife is so perfectly shaped when closed that it doesn't snag anything in the pocket (nothing is sticking out, uneven or rough).
The only odd thing about the Sage 1 is that it feels almost too light with the skeletonized liners, open construction, and carbon-fiber handles (almost delicate) but its way tougher than it feels - I've cut some stuff with this thing that I didn't think I was going to be able to and its done it with no issues and is still plenty sharp (Spyderco heat-treats their S30v to a super-hard point).
I sold the Gayle Bradley, because I'm not a large-EDC kind of guy, but if you are, its probably perfect for you. If you're not, then get the Sage 1 and you'll not regret it.