In reply to earlsdonwhu:
Damo is one of the resident experts on the region and I can only agree with him about the LP being good for an overview of many regions.
But if you DO go for the Everest region, and want to go it alone, then the Jamie McGuiness book "Trekking in the Everest region" is brilliant. It's more a guide to the valleys and peaks than other stuff, so can't get too out of date. Except, unfortunately, for a few earthquake-scale geological changes I suppose!
Depends on what you like as to how you go. Some people love being guided and would hate it any other way. I have friends like that. But we were the opposite. We always love being in the mountains by ourselves and wanted to just free wheel and explore as much as we could. The groups or guided individuals we meet along the way were not having even a fraction of the fun we had. Or at least they never showed it.
They often say that when you go with a local guide you really get to meet the locals. But you only meet "your" local(s). Your guide does all the negotiations between the teahouse staff and various checkpoints etc. Whereas we meet all the locals! Often sitting around the fire, just us with mama sherpa and the family, chilling out and feeling the vibe.
We went all over the show -- at all times of the day. The guided parties were always heading back to the teahouse around lunchtime or early-mid afternoon. And actually, some of the stuff some local guides were doing with their clients was really dangerous - descending big iced up slopes with massive run-outs in only trainers or light boots with no spikes. Ouch - scary to watch!
We grew up in the mountains, like Jamie McG (who wrote that book), so perhaps that kind of thing works better for us than most British people. But if you feel up to it, you can have a ball going your own path.
If you want to see what we did with our 30 days up there, you can have a look here:
Whatever you choose - have fun!
Bruce