I got the KillAWatt P3
https://www.amazon.com/P3-P4400-Electricity-Usage-Monitor/dp/B00009MDBU/ref=mp_s_a_1_3?ie=UTF8&qid=1550236434&sr=8-3&pi=AC_SX236_SY340_FMwebp_QL65&keywords=killawatt+meter&dpPl=1&dpID=41jXOUcM37L&ref=plSrch
I got it new from eBay, a few bucks cheaper, no shipping/tax, and...