Thanks Pornwolf and EscortBiz for the comments :D
To answer the question at hand, I do recommend WPG as a submitter and as a tool to prep your pages. It's a good product that automates a lot of the work required and especially at $149 for the basic version its really worth it. Let's face it, if you can make 4 sales in one year from it, you broke even already.
In regards to Google banning WPG, that's not exactly true. Google is actively banning IP's that are conducting more than 1000 automated requests per day. So if you use WPG, I wouldn't use it to "check" your rankings on Google.
Either way, I gave a full review of it on Submitcorner here:
http://www.submitcorner.com/Software/Webposition/
WG