I have 3 Sony LCD TVs (I didn't really have a say about "what to buy") made in last few years, and amazing features they have indeed:
* web browser that says 'out of memory' when loading google page with more than few search results
* youtube application that crashes randomly if video is in 1080p (sometimes TV resets, sometimes that neat 'out of memory' info window)
* 3 min bootup time where half of it is 'running but not really' where there is picture and trying to do something using remote control ends with window saying something like 'not ready yet, please wait' and delaying boot process even more
* whole thing hanging up for up to a minute on every single operation like displaying list of thumbnails of YT/netflix/whatever videos and suddenly responding to all buttons pressed when it hanged up (multitasking is hard to do on these 4 cores processors it seems) - good luck after pressing that 'next page' button few times by accident.
* sometimes there are cryptic errors with random numbers when trying to update software, after which damn thing stops wanting to connect to the Internet - Sony tech support asks to turn off firewall and ask your local network administrator (I've asked myself question about this error no 184582 and I couldn't really get any good answer) - information what port or protocol or whatever may be a problem is not available. I wonder if I should use packet sniffer to reverse-engineer what to do and send them info so they'll put it on the website.
* DLNA support is kinda OK, but sometimes I have to mess around with transcoding settings on my DLNA server so it won't run out of memory and crash.
* you can't connect any normal USB keyboard/mouse to them, and instead are stuck entering addresses using GSM phone SMS interface-style keypad using crappy numeric keypad on remote, with no easy way to correct mistakes (and my Nokia 3210 was much more responsive than this interface, really). Ok, they "fixed" it in newest models and added something resembling Android QWERTY keyboard, so I can navigate it using arrow keys on the remote, I don't know which is worse. Ah, and Youtube app, joy forever! Use left and right arrow to select from A to Z in a linear fashion, best user interface ever. Honestly speaking it's nearly unusable without connecting smartphone/PC to browse videos and use this 'play on TV' feature.
And that's what tech-savvy person gets for having Smart TV, from not one of the cheapest brands.
50$ Android tablet or set-top-box bought on Aliexpress connected via HDMI would probably deal with these smart and cool things better than expensive Sony crap.