... and had a high volume scanning/faxing need. Had an HP G85 at the time. That broke (mechanical damage ... long story ...) and I had considered repairing it, but the prices had come down quite a bit.
I now have an HP 5510 that I bought for <$130. It has two scanners (feed and flatbed) so can scan multiple pages. You can photocopy and fax WITHOUT having the computer on/connected which is a great feature. I can scan and print in color but, like you, my main use is in B/W. It comes with OCR software that works well (in conjunction with spell checker in your word processor). My only complaint is the cost of the cartridges, but with heavy use I'm just now getting to change the black after over 8 months and there are more economical options (refills) if I were so inclined.
It's a great little machine, and compact and light to boot. It was no big deal to bring it down to my folk's house last visit so Dad could use it for some stuff. It's on my list for him for next gift season.
The thing about all in ones used to be that if one component broke you had the dilema of a high repair bill or having to buy -- say -- a scanner and still have the bulky all-in-one. With the prices of these machines these days, that's not so much of an issue. So I have one connection to the computer, one set of drivers installed, etc. I'll probably never buy "just a printer" again unless I become some sort of photo buff and get a high end photo printer.