Marginal transport controls (Play/Pause+FF,REW) that may - or may not - actually resume where you want; Beware of "bounce-back" where playback resumes from 30 sec to 15 minutes (!) before the point indicated by preview window!
Lately plagued by superfluous recordings (ones no timer set for), missing recordings (active timers set), frequent buffering (my ISP speed is >275m/s) and sound drop-outs.
When you call for support, OGM directs you to "Help" webpages, where explanations of error messages actually generated by Sling are NOWHERE! To be found Really!
Recent support phone call went un-answered for 1 hour & 20 minutes (no one ever did pick up the call)
On some channels (e.g. CBS News) a timer for "new episodes only" will record 3,4 and 5 duplicates of the same episode!?*
And, if you are the least bit demanding of phone support, you may end up listening to a disconnect dial-tone - with NO provisions to speak with any supervisor or manager.__________________________________ * "Fixes are invariably the same rote set of troubleshooting steps (no matter how irrelevant to the issue), followed by "I'll have to submit a ticket to..." However phone support frequently promises (blithely & falsely) that someone will contact you when the issue has been re-jiggered. My advice, based on long, painful experience: "Do NOT hold your breath waiting!"
P.S. Had I not saved a copy of above, when sitejabber forced me to sign-in & thus DELETED EVERY BIT of carefully-composed review -- I would have been extremely pissed!