Simple SEO URL vs Ultimate SEO URL

[alimtlai]

1. What's the main differences between these two add-ons?
2. In the Ultimate SEO URL discuss thread, many people mentioned that there is no improvement in SEO using this add-on. Is it true?
3. Is there any other better SEO add-ons?
4. I know that zen-cart will auto-format the meta tag keyword if you don't input it. How about the meta tag description, if I don't input, will zen-cart use the product description?
5. Is there any comprehensive guidebook on zen-cart SEO available?

[yellow1912]

1. What's the main differences between these two add-ons?
http://wiki.rubikintegration.com/zen...ules/ssu/about

2. In the Ultimate SEO URL discuss thread, many people mentioned that there is no improvement in SEO using this add-on. Is it true?
Possible. This has been mentioned many times, most search engines work just fine with dynamic urls.
The main purpose of seo url, in my opinion, is rather for user friendly purpose.

3. Is there any other better SEO add-ons?
You can check the commercial ones