Even though this is a zombie thread... I did post about the zillion magazines I subscribe to, so here's a 1-year later update.
I still subscribe to Hot Rod. Some issues are "off", like the fad ones, but others are still excellent. Worth $10/year to me for 12 issues.
Car Craft is still the best tech car mag out there. WELL worth subsribing to, especially if you ever want/plan to build a V8. They have done Buick's, Oldsmobile's, Pontiac's, LT1's, LS1's, SBC's, BBC's, SBF's, 385-series BBF (460's and even BOSS 429 headed ones!!), FE-Series BBF's, LA Chryslers, BB Chryslers, AMC's, and even some 6-cylinder stuff (Buick Turbo and I-6 stuff).
GRM is of course still saved every issue and read cover-to-cover. I probably ought to subscribe to CM instead of picking up random issues now that I have the Javelin.
R&T was literally identical to C&D for awhile, even had the same cover shot!! I let that one lapse, though interestingly I did stick with C&D for another year (which will now lapse after their absolutely ridiculous "Best Handling Car in America" article, what a crock of E36M3!!!).
I still keep every issue of Hemming's Muscle Machines. An absolutely professional publication that really covers a great mix of stock and modified muscle cars and a lot of really cool stuff from the 50's, 70's, and 80's. Last issue had a 83 Trans Am, nice!
I re-subscribed to PHR now that I have the Javelin. Most of their stuff is still way too "Faux-Touring" for me, but there is some good tech from time to time.
Sportscar still comes in from the SCCA. It hits the recycle bin pretty quickly most issues.
RotarySpeed went under. SubieSport (or whatever it was) got bought out by GRM. SCC folded. I think that's all of them.