Any reviews on Spectra all aluminum radiators?

The radiator on my Columbia started to leak a little and I'm looking for a good replacement. I came across these all aluminum radiators and they seem better than the original plastic ones. Plus $700 shipped is a lot better than the $1100 the dealer wants.

Are cores the same as rows? I keep seeing stuff on here about 3 and 4 core radiators and this one doesn't mention the number of cores but says 2 rows. Is that the same thing? If so, is 2 bad? I don't have any overheating issues currently.

This is the one I"m looking at:
http://ecat.spectrapremium.com/prod/2001-1715

 

Thanks for the info. I just run a 500 hp Detroit and don't have overheating issues but it does warm up fairly quick climbing mountains in the summertime so I had install a manual fan switch. Sounds like this will cool even less than stock so I'll pass on them.

Any recommendations on good aftermarket radiators? I'm willing to spend the $1100, just don't want to spend it on a stock plastic tank radiator.