Damn... Karina is so perfect in every aspect of her body but then again so is Chloe.... ugh...
Well, since they are equivalent in aesthetics I'm going by their attitude... Chloe wasn't afraid to get passionate with other big breasted models, and would even go full hardcore and she still has a website of her own... whereas Karina would very, very rarely touch someone... so much that unfortunately after shooting that one tittyfuck video (that she clearly didn't want to do) she kinda lost her soul and was never the same ever again. After that she would still do some work, but she lost weight (and therefore titmass) and would only go topless with no full nudity or masturbation...
So my vote goes to Chloe.