I don't know too much of the technical stuff but this is what i know from my experience and i hope it helps.
Any Mac Mini 1.86ghz CoreDuo and better will be able to stream 720p video. Theres really no advantages to having the 2010 HDMI model compared to the others. I personally had a 2.26ghz Core2Duo and am currently using a 2010 HDMI 2.4ghz Core2Duo.
I prefer XBMC over Plex. I didnt like the fact i needed to run an older version of Flash with Plex. And i prefer the interface of XBMC over Plex. With Plex you need to go to the Media Manager (not the actual Plex program) to edit any titles or file information. On XBMC you can simply click "C" to get the contextual menu and do any editing that way.
XBMC by default uses thetvdb.com and themoviedb.com to scrap for TV and movie information. Plex by default uses imdb.com for both TV and movies if i remember correctly. I prefer imdb.com over the other two websites. At first i considered this a downside to XBMC and i didn't know i can download scrapper plug-ins for other websites. But now that everything is synced with thetvdb and themoviedb i'll be leaving it that way.
I currently have a LG LE5400 LED/LCD TV rated at 1080p. However i set the Mac Mini to 720p for larger text. I found this to be the easiest way and it really doesnt bother me. At first i tried 1080p, made all the desktop icons large, but i was still having a difficult time seeing text. I also tried Kylo since it has its "10ft interface" but i can stand that browser. Also tried enlarging text on Firefox but it distorts websites which i didn't like. Fed up i set it to 720p which has worked perfectly for me.
Any Mac Mini 1.86ghz CoreDuo and better will be able to stream 720p video. Theres really no advantages to having the 2010 HDMI model compared to the others. I personally had a 2.26ghz Core2Duo and am currently using a 2010 HDMI 2.4ghz Core2Duo.
I prefer XBMC over Plex. I didnt like the fact i needed to run an older version of Flash with Plex. And i prefer the interface of XBMC over Plex. With Plex you need to go to the Media Manager (not the actual Plex program) to edit any titles or file information. On XBMC you can simply click "C" to get the contextual menu and do any editing that way.
XBMC by default uses thetvdb.com and themoviedb.com to scrap for TV and movie information. Plex by default uses imdb.com for both TV and movies if i remember correctly. I prefer imdb.com over the other two websites. At first i considered this a downside to XBMC and i didn't know i can download scrapper plug-ins for other websites. But now that everything is synced with thetvdb and themoviedb i'll be leaving it that way.
I currently have a LG LE5400 LED/LCD TV rated at 1080p. However i set the Mac Mini to 720p for larger text. I found this to be the easiest way and it really doesnt bother me. At first i tried 1080p, made all the desktop icons large, but i was still having a difficult time seeing text. I also tried Kylo since it has its "10ft interface" but i can stand that browser. Also tried enlarging text on Firefox but it distorts websites which i didn't like. Fed up i set it to 720p which has worked perfectly for me.