$4000 on mods! What are you talking about? Most of the mod packages are in the $500 range and you can buy brand new, already with mod package, CD25's for under $1000. I don't know of anyone who even offers a mod package over $1000.
I think the review at Audiophile Edition would refute this. Reading from their review with a direct comparison between a UNMODIFIED CD25 and Rega Planet 2000 its fairly obvious they prefered the CD25.