OBG, some EMS systems are playing with compression-heavy CPR. I believe Arizona and Minnesota both have systems that are doing the 200 cycle/ 2 breaths (IIRC) cpr. I've seen resus. rates approaching 10-20%, but that might just be biased stats. Anyone can play with those... for example, this past year I've had a 100% resuscitation AND discharge from hospital CPR rate. Of course, I've only had 1 arrest....

As for the masks, Climberslacker, YES, you can reuse it from class. Once a real patient has used it, toss it. Even though you can sterilize them, it's like $12 for a new one. I personally wouldn't want to carry a vomit/blood/saliva filled CPR mask back to my house just to save a few bucks.

All the masks here have been OK. Personally, I carry a keychain mask with a valve in my backpack, and a BVM in my car FAK. I've already had enough traumatic arrests where a pocket mask would have had blood all over my face (gotta "love" facial trauma). I'll keep my distance, thank you very much.