So I am wondering, are they any better? I hear great reviews about Denso and how much more power mini owners of R53's are getting is it the same for R56's?

Here is a Denso link that shows compatability to our vehicles
http://www.globaldenso.com/cgi-bin/g...&action=search

Here are a set of 4 spark plugs on ebay for $32 already shipped
http://www.ebay.com/itm/DENSO-5353-IRIDIUM-Power-Spark-Plugs-IXUH22-4-PCS-NEW-Made-Japan-/151309617909?hash=item233ac18af5&vxp=mtr
What do you guys think? Should I go for it?