Funny you're targeting the SBM blue color, I too love that color, but in my local area, I think there's no less than 5 of them!
In contrast, there's a few black ones (PBM), 2 dark red ones (SRM), a silver one, and one or two MGM's, including mine. I love my g8, sure, it's had a small subset of problems, but some of them I caused...lol.
It does turn heads where ever it goes, that's for sure. And it's a blast to drive. Mine is a year round driver and I have a set of snow tires that plow through anything. Rusty underneith? Yep, this is a workin car and daily driver, not a garage queen, but it brings me smiles every day I drive it, which makes it all worthwhile.
Lately I've been playing around with some interior electronic mods. Pontiacs are traditionally "red" ... well, not mine:
Anyways, good luck on the hunt, if you know what you're looking for (sounds like you do) and are thorough on your test drive (as you should be) and ask to take the car to a trusted mechanic contingency of purchasing, you should be fine.
Or you could save up for the upcoming Chevy SS... but those will be "limited edition" as well.
The G8 community is awesome, and I'm glad to be a part of it.
--zepcom