As much as I don't want to take this beauty on the road, will need to, starting in July. Looking for suggestions for a good fit. Prefer hard shell and hopefully something less than tank weight.

http://www.guardiancases.com/ck010.html

I have 2 of these one is for 76 keys( used it for the Pa2xPro) the other 61 keys I use for my Pa3x-61, can't go wrong with Guardian.

Each case comes with 4 or 6 (don't remember) foam bumpers so that if the Pa3x-76 doesn't fit like a glove the bumpers will make it fit like a glove.

I purchased this one for my PA3x (on sale at $100). It's about the hardest soft shell I could find. The weight is about 22 lbs. Plenty of solid padding for protection.

SKB SKB-KB76 76-Key Keyboard Bag with Wheels

IMPORTANT: That PA3x is HEAVY. I bought a case before this that the handle started to rip. I wouldn't use the above case without "supporting straps" that wrap underneath it. I was looking at "Strap-a-Handle"

+1 Guardian

I'm very happy with the case I got from www.hybridcases.com

It's lite yet strong and the price is good too.

I bought one from here:
http://www.newyorkcasecompany.com/keyboards.htm

They can also be found on ebay ...