Looking for a 37" sized LCD for my room. Primarily hooked up to a PC to watch videos.

I picked up this one: LG 37" 1080p 120Hz LCD HDTV** (37LH40)
Thinking of taking it back for this one: LG 37" 1080p Flat-Panel LCD HDTV** (37LG50), savings of $300.

They are about the same, the cheaper one doesn't have the 120hz. Not sure if I need the refresh rate that high since my video card only goes up to 60hz (nivdia 9600 gso 756sli, cheap $80).

Advice?