Which software for long tail keyword research?

Can i know which keyword research software that can search around 5000-10000 keyword and also long tail keyword because i find that Keyword Research Pro software can do like it.

I download the 7 day free trail and i am happy with it. If it compare to micro niche finder, keyword elite and market samurai. I found that this software can do more keyword research from other because i want to get a lot of keyword or long tail keyword to be use for create a doorway page. So i dont care the competitor and search volume.

Anyone can give me some suggestion or does anyone have this crack keyword research pro software? Thanks