albo - 3:25 pm on Aug 11, 2011 (gmt 0)
I vote for "either". I confer with many Brits (and Scots, and Irish) friends on Twitter. I have no problem understanding their spelling differences, nor reading those differences on web pages to which they refer.
And I'm one of those to whom they refer as the #grammarpolice: aware of dangling participles, split infinitives, and all.
Some "best practices" in "an English" are somewhat important. Clarity and other matters evolve; Hemingway's rules are eternal. But "inquiry" versus "enquiry" (and "color" versus "colour") seem to me overly nitpicky.
"Even if you do learn to speak correct English, whom are you going to speak it to?" (Clarence Darrow) [dangling participle his own]