As I said Dexter it came with the TV, I have no use for that function at all!
If I want Internet stuff that small format PC is definitely the answer, my advice is similar to yours do not bother with the Smart features that many TV manufactures offer, if you do wish to use your telly for films and other stuff then a small format PC this I feel is the way to go or IPTV streaming unit, I use the Mag as you know, love that too.
The Lenovo 190 I use also plays blu-rays!! and remember those DVD's
I highly recommend this way to do it if you do not wish to have streaming TV, I am fortunately spoilt for choice on this

.
On paying for these features we may or may not use, when I looked around at the cost of these Samsung 50" TV's in Cyprus they actually cost less than Amazon or most UK outlets, they would not in any case ship out here also you have a local warantee, very happy with the unit cost more than happy in fact.
As you may or may not know I am not a casual TV viewer like some on CL, I use this equipment daily when not helping to run this website, I treat my TV as a pleasure not for occasional use, it is used....a lot!