Getting in a little late, I will try to cover everything.
Yes, the LX-3 upgrade is worth it. Big Time in my opinion. The display with be much brighter, and crisper with the upgrade and your resale on the unit will be much better in the future.
I have two personal units that I use for guiding that I had upgraded a couple weeks ago. Again, I recommend everyone get it done. Those LED lights are amazing. If you are color blind…the TrueColor upgrade is a must.
As for the turn around time. They are flying through the upgrades right now. However, because of the popular demand, there are a lot to do. Customer Service is taking 20 units in at at time and then sending them up. Some people have received their units back already and those that have sent them in, will be getting them shortly.
I have several units being upgraded as I type this. Those units will be for sale in the next couple days. If you are interested in one, get a hold of me soon..they go fast!