Well the L110's are in London and the 4310's are in Boston, so not actually getting rid of either of them yet, and perhaps I'll hang on to them both. I'll take a looksee when I'm back home later tonight and see if they are L110's or L110A's. I assume the L110A is only better because of the improved network?
Oh and thanks to SMKSoundPro for the info about the recone. My impression is that for a few extra bucks, i'll not only make them sound better but extend the life a bit more, so seems the best way to go. Also if anyone has any hints on good JBL service locations in the Boston area, I'm all ears. I could get them done in London, but not only will it be more expensive I'm sure, but they are a pain to transport.
Thanks again for all the input.