I have gone on the A380 half a dozen of times, and each time it's better than before, specially in terms of service.

Yesterday I did DXB-SYD, 6 suites out of 14 occupied (including my wife and myself). The crew was superb in every way. You could say professional, friendly and warm at the same time.

The shower experience is the best and as far as I know the only one in the world on a commercial airline. My wife discovered that the shower's tile temperature can be set to warm. Just slide your finger across that little sensor pad under the tv screen in the shower and you could set the floor temperature there.

I managed to get a full shower, including a full body scrub, hair conditioner and the water indicator showed 1 bar green (just above the middle). I spent the rest under hot water.

I suggest you wet the lufah and soap it in the sink prior to entering the shower.
Also the shower sequence would be something like: wet hair/body, shampoo hair and wash it off, then srub body and condition the hair then rinse off. (obviously pause the water after each step).

Back to my experience, I was surprised that, even though it was the EDA (first A380 delivered to EK couple of years ago), everything felt and functioned like new.

Like DTB said, 2/3AK's are the best if you're solo. The window seats have few more storage compartments too.
1A/K have one less window, has a little more wind noise, and toilettes/bar noise, but feel more private. 4A/K are the ones to avoid because of the galley/kitchen noise.
My only gripe with middle seats is that you can't see any windows (which is only relevant during taxi/takeoff if you like to look around).

The food out of DXB was excellent. I am pretty sure you will enjoy it as well. Out of SYD, I wouldn't hold my breath for it. My suggestion is to dine in the lounge in SYD where the food is simply superb, then snooze off after take off. Have a light breakfast/snack prior to landing into DXB. Then enjoy the food at the lounge during your transit.

Ditto to DTB on the Lebanese olives in DXB's F lounge (and other Lebanese plates: hummos, baba ghannouj, fattoush etc) These were the best I've had, ever. And I'm Lebanese, so that says something about how good they are

Yesterday's flight was the first flight in a long time with EK where I saw my bags appear in SYD within the first 10 bags out. Not sure about LHR's end of things, but if you're returning down underI would suggest you ensure the check in staff tag your bags properly.