in Houston we are in a transition from lp-12 to another monitor, which we are testing. its between zoll x, lp-15, and phillips heart start mrx. the zoll x is super light, the bp cuff gets a bp really fast and accurate. on cardiac arrest patients it is very efficient it charges up to 200 joules but actuallys shocks up to 280 from what i saw. the rep said the pads talk to eath other and see how much current is needed to get a good biphasic shock. the 12 lead print out is different than an lp-12. white paper with faint big and small boxes its a 3 by 4 read out, different than were used to. i had it for about 1 month and overall i liked it. i had 4 cardiac arrests with it and a couple cvas. no stemis tho. sweet little cpr sternum pad to measure the depth and rate of compressions. very long battery life, had a long cpr case where he was shocked 9 times and maybe lasted an hour and 45 minutes. so far ive tried all of them and the zoll x is very high up there on my list.