FRU numbers for AUO B156HW01 V.4

[pjw901015]

I have T520 and plan to get AUO B156HW01 V.4 for an upgrade.
However, I found out that there are three different FRU numbers for this panel, all seem to be in use by lenovo.
42T0765, 04W1544, 04W1511.

The first one, from what I know, is most commonly installed on T520's (don't know about others).
The latter two, 04W1544 without a touch panel and 04W1511 with a touch panel, seem like they are more rarely found (according to what I've found on the web).

Here is the question. Are they all of the same quality?
I'm going to purchase the panel from ebay, and 04W1544 is much cheaper than 42T0765.
I can't find 04W1511, but I'm sure it's multiple the cost of either one.
If there's no difference between the two, I'll obviously get the less expensive one.

If anybody has info, please share it with me. Thank you.

[Brad]

From my experience the first one is used on the W510. The second one is used on the W520. Not sure about the third. You will at least need a different LCD cover for the third one as the touch LCD is thicker than the first two. Not sure if anything else is different.

Brad