In my experience the chlorinated works better/faster and dries almost immediately. The non-chlorinated stuff . . . doesn't.
Anything the government forbids results in something that costs MUCH more, doesn't work well, or in some cases, at all. Toilets, gas cans, caulk, paint, brake cleaner--to name a few.
Supposedly chlorine sticks to or contaminates certain pads. I dunno.
There is a WILD range in non-chlorinated cleaners when it comes to effectiveness or quality. The O'Reilly house brand non-chlor is pretty good. And only some of the CRC stuff. If it's a green can with any sort of a yellow banner or highlight, it
*****. Napa sells a lot of this. True, old-school non-chlorinated is best (and probably not available in California).
The red can chlorinated CRC Brakleen is way cheaper than wasp spray, sprays nearly as far and works just as well. I don't understand why it seems to be the ONLY aerosol brake cleaner that sprays so far in such a nice, solid stream.
I've been in the same boat as the OP (albeit he started the thread in '12), looking for good deals on cases of brake cleaner for wasp season. I think I ordered through Reid Supply but after shipping it was barely a savings. I watch O'Reilly like a hawk for sales on either their stuff or actual Brakleen. 2 for $5 is a great deal, 2 for $6 is a decent deal.
The crappier non-chlor's won't remove Sharpie or Markzall from steel or Al, but the better ones rinse it away like a miracle. Perfect for cleaning layout marks off parts. Also good non-chlor rinses Dykem right off. Ever priced a can of actual layout fluid remover? Holy ****.
edit: there were some cases of brake cleaner CHEAP on Amazon awhile back, it appeared in Hot Deals and I think it made it's way there from SD of course. Worked out to like $1.30/can. I ordered a couple cases and it was the hippie non-chlorinated, might as well have been spraying water, didn't do a damn thing and seemed to mist most of it away before it got to your work.
edit edit: here was the Amazon stuff,
now long dead (2014)
http://www.garagejournal.com/forum/showthread.php?t=251685