I've never had a 411, but did have a Scrapper 5 which is close. That being said, I did have a Rodent 4 for a short spell (days).

I really like the mudder grips, but the R4 also had a great handle IMO. The 411 will be a bit lighter due to handle construction.

All in all, I don't see how you can justify the extra $30 bucks for the R4. If they both cost the same, it would be a much harder decision but the Scrap Yard Price to Performance ratio reigns supreme.