The M-30 is a concentrator I can't wait to get my hands on. The company has already released the M-10 and M-20. Those are 10 LPM units. The M-10 is 10 PSI and the M-20 is 20 PSI. They are finishing up the M-30... it's going to be an awesome unit. I'll have to check on the M-10 and M-20 prices... it's VERY reasonable and they are quiet like a mouse.
The M-30 hasn't been priced yet, but it's sure to be the best value.
