Keyword elite vs. keywords analyzer

[hassen1]

hi everyone, i'm looking into increasing my kw list for ppc advertising (for example, going from 500 kws to 50k-100k). i started looking into kw research tools, and came across Keyword Elite and Keywords Analyzer and i wanted to see what you guys thought... can any of you give me some input as to:

* which research tool out there is superior
* sites with articles specifically relating to building kw lists
* the steps i should consider taking once i develop my master kw list (maintenance, clean-up, etc...), and things to watch out for

even if you just point me in the direction of other DP threads, or sites, that would be great. (just tryin to get in on the long tail of the game....) any input is appreciated.

[humpty]

50-100k???

that's a really huge amount,
do the pros really do their efforts up to such a huge number????