Out of the ATV and Nvidia Shield players, I selected one exclusively for Plex. Both are excellent, but ATV ended up being closer to my tastes because it makes extensive use of Apple technology, plus there are no Google TV advertisements and more powerful cores working in a single thread here. Plex plays everything without transcoding, and navigation is as quick as you can reasonably expect, at least for my purposes.
HOMELYLIFE 600W High Power Voltage Reducer DC 48V 60V 72V Step Down To DC 12V 50A Buck Converter Waterproof Module Car Truck Power Regulator Transformer
12 Review
EXuby Digital Converter Box For TV With RF/Coaxial And RCA Cable For Recording And Viewing Full HD Digital Channels Free (Instant Or Scheduled Recording, 1080P HDTV, HDMI Output, 7 Day Program Guide)
12 Review
TV Tuner LUMAX DV-2120HD
15 Review
Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
16 Review