In the under-$500 department, I have a Canon 35/2.8 and a CV 35/2.5 LTM. They're both excellent, though different. The Canon is pretty sharp and low contrast, but there's a lot more sample variation in 50-year-old lenses than you might want to deal with in a first/only lens. The CV 35/2.5 is extremely sharp, and the contrast isn't crazy high. I think you should get the current M-mount version, which is better built and has a nicer focus tab than the LTM model I have. If speed is a primary consideration for your shooting (lots of low-light situations) then by all means get a faster lens like the CV 35/1.4, but you'll likely give up significant sharpness and definitely give up some compactness.
For a meter, I like the Sekonic L-208. It's small, easy to use, and simple.
I also have a Gossen Digisix, which has so many stupid bells and whistles that it drove me crazy - temperature? time? alarm? why on a light meter, for crying out loud? But if you really want one, I'll sell you mine. 🙂
Ari