Any pale malt/pale ale malt will do, and it will have a lighter colour and flavour than MO. I have used GEB's Irish pale malt and it was great.
A couple years ago I was gonna use Golden Promise but read it has a lower extraction rate than other pale ales. I can't remember where but even if it's true I don't suppose that matters, just use a bit more malt.
As someone who loves to make all sorts of lagers, I used to get Weyerman Pils, or some other type of German pils. I switched to English lager malt (and Irish lager malt when I was living in Ireland) and there's no noticeable difference. I tried to research what the difference between the two is, and all I could find were various forum posts of people saying:
-If you want a genuine pilsner, use pilsner malt
-why is that? what makes it "genuine"?
-well, you know, pilsner...
Which backs up my experience that there is no discernible difference.