2008 model LG 42LBX vs. XBR4

[maygit]

I'm wondering which TV looks better, and why? It is really difficult to find reviews on this LG BTW.

The Story:
We just remodeled our sun room and were looking to wall mount a 40"-42" LCD. While i was at work, my mom decided to go to a local retailer and check out the TV's. I sent her in to look at the XBR4's(they didn't have them but could get XBR5's for like $2399.99). So instead of talking to me about it(i work in electronics at sears) she decided to buy the LG 42LBX model with 120 hz TruMotion because we wanted sony's 120 hz MotionFlow and they claimed LG's was the same.
The only problems I have reading on this TV(i have yet to see it) is the contrast is only 10,000:1 where, i know you shouldn't compare cross brands w/ contrast ratio but this is a huge difference, sony's is 18,000:1. Also i find that Sony has the best motion enhancer of all companies, i tend to notice glitches in other companies like Samsung w/ their MotionPlus. Other than that, it rates good and she got it for $1900. Do you think she should get this, or spend $200 more and get the xbr4 from best buy?