Now for sale are two HDTVs in Panasonic’s new X1 Series, the TC-P42X1 and TC-P50X1. Especially of note is these sets’ 600Hz “Sub-field Drive” which delivers crisp moving images (Note: 600Hz is 5 times the rate of most high-end LCDs and 25% higher than previous plasma sets). These two big screen TVs do have one downside in that they only have 720p resolution, but their attractive price point might offset this for many of you.