Thank you all for the input.
I like using the ABBYY editor as it allows me to see the scan matching up with what I am editing. As a result, I can quickly see what a word is meant to be or what punctuation should be like etc.
I'll most definately be using Ctrl+H for my find/replace - this should save me a fair amount of time with some of the more common errors
I am also starting to use the pattern trainer so hopefully this will reduce the number of errors on a page.