Sitemile or FiverrScript

Hello everyone!

I'm new here. I dont know if this is the right board to post my question but anyway here it is.
I bought a domain name which I think is great(fiville). Now I'm looking for a script.

Which one is better? Sitemile or FiverrScript?

In terms of
-SEO Friendliness
-Support
-Updates
-Modifying Script

Actually I already bought the sitemile but I think it lacks the features I want like

• Seller Levels
• Referring comissions

and also I have knowledge of php but not much of wordpress. I think I will be adding my own features soon that is why I want to know about modifying the script.
Thank you in advance for any replies!

sitemile looks good, plus its alot more unique than fiverscript

Any other comments?

I prefer fiverrscript, its the best one out there. Join the fiverrscript skype chat group. PM me