If you like a standard dimensions Fender Strat neck, check out some of the fellows who are regulars at TDPRI on the classifieds page.
I wouldn't personally buy from
www.reliablefender.com but many have, as they part out a lot of Fender necks and bodies there.
Give Allparts a look, as well as USACG webpage specials and Warmoth. I just got a $ 175 webspecial one piece maple 7.25-9.5 from Tommy, clear grain. Warmoth does a lot of mild birdseye, not flat sawn, which should prove even enough in density and stiffness to give years of great service. I find excessive birdseye or flame to be more problematic. And it is too expensive.
When you get into Fatback and Boatneck section necks, quartersawn will cost you a lot, it is far more important on skinny necks, IMHO.
Also check into Musikraft - I hadn't bought there yet.
Bubbanov