You could try the OxyCheq Expedition, about $250 from ScubaToys. It's the Analox O2DII (not the O2EII that you're looking at) that has been tweaked a bit by OxyCheq, for the better I would say. The problem would be if you are diving on a boat operation, that has the tanks on the outside of the boat: you can't read the display when you check the %O2, at least not easily, because the of the way the tank valve faces. You have to rotate the tank.
Which of course you don't have to do with the O2EII, the big reason to get it. So, is the convenience and locking display worth an extra $75? It is for me.
You can order from the Amoxtec, the USA end of Analox, at the same $325 as from your LDS. They also have a "Box pack that includes the pelican box at $347. I would rather order from my LDS or Amoxtec than LP, because I would be unsure of the time on the shelf for LP (and lifespan reduction of the sensor). You could lose the savings from LP in one premature sensor change.
All the best, James