it's generally cheaper to produce one item(even if it includes extras) than 2 items. so despite the fact you're going to feel like you wasted money buying a tv with smart features, the truth is you aren't. don't worry about what 'extra' the tv has, just compare the stuff you need, and buy the best deal.
I mean, for me, all I wanted was great picture quality, didn't care for 3D, smart features, etc, but all the TV's with great PQ come with that stuff anyway.
Displays: Samsung PN64F8500/JVC X35
AVR: Pioneer VSX-1018AH, 5.1 audio
Sources: HTPC(Mediabrowser), PS3, XBOX360, Wii, Sony DVP-CX995V
Control: Harmony One