thats not a tv, its a stream box. allows you to mirror content from you mac or ios device to your tv.
go with a mac, lenovo is the top rated PC brand, but its still PC. the mac with retina is 1250 right now, solid state drives are why they are so expensive. lenovo makes one with a solid state thats around the same price, but you dont get the intergration you do with a mac. especially with Yosemite coming out in the fall. if you have iphone or ipad, etc. its a no brainer.
you can get 150 if your a student. also iworks comes on it, which office doess not come on PC's.
less hassle for security, solid state, better OS. only feature you lose is touch screen but... the digitizer is just another thing that can go.