For those who are interested, I measured the size of the base of the 55WF655. It is approx. 39-1/4" wide and 18" deep. A 40" wide stand would certainly work.
After installing the set, yesterday, we connected the cable line. The set took about 50 minutes (!) to scan the cable and find all of the analog and digital channels. At each digital channel, it must pause for a period of time and collect MPEG PID (program ID) values. It has then populated the channel table and those analog and digital channels are available.
The primary digital feed for some of tha local OTA channels (NBC/CBS/FOX/PBS) are available on the cable. I don't know why ABC is not included? (or maybe I just haven't found it yet.) There is also a number of other digital channels which I have found, including several HBO channels. (Although someone told me today that he had seen advertisements that HBO was free only this week as a promotion, so I don't know if this is permanent.) I do not yet have the CableCARD, and have not purchased the digital package from Comcast, so there is some number of digital channels which are available with the basic cable package. The digital channels appear at various places in the spectrum. The lowest is channel 15, the highest channel 115. So, this is good news that you can get some digital channels, without paying an additional digital cable package.
The set also found numerous digital audio channels. This is nice, but I don't think I will waste my bulb life on listening to music. What is really needed here is a way to turn off the bulb, while still outputing the audio.
That is certainly technically possible since everything in electronics today is controlled by software. Maybe there is a secret remote control sequence for turning off the bulb??
I also tried last night hooking up a small antenna to try and receiving the OTA channels. I had some success with this, but because some of the OTA channels are already on cable, and there is a learning curve with this television, I haven't messed with that again.
I am very happy with the PQ. The NTSC PQ is very good. I haven't noticed any visible problems that I could attribute to the set. The NTSC quality has much more to do with the quality of the signal your cable company provides -- this can be highly variable.
The SD PQ is also very good. The display is consistent. Any quality issues here depend much more upon the quality of the compression source.
The HD PQ appears to be excellent. The Tonight Show looks superb in HD.
The display is bright. Colors seem lifelike. The off axis viewing is also very good. The room we have this in has southern exposure. I feel like the brightness of the set will be suffcient, even when the room is bathed in sunlight. I experimented a bit last night with the power saving mode, but couldn't detect any visible difference. I suspect that I will run in power saving mode most of the time. I haven't noticed any issues with the black level, but I don't necessarily have the golden eyes to comment.
My only nitpick about the set so far have to do with i.) remote control is too small, with many tiny buttons, placement of channel and volume controls is awkward. ii.) needs an easier way to turn closed captioning on and off. (We have two small kids and they seem to make noise during important dialog. With CC, we can read the dialog the kids have obscured.) iii.) Remote control seems weak and has to be aimed carefully at the set (or I need new batteries!)
I was a bit nervous buying it without ever seeing one in the store. But at this point we are tickled with everything about this set.