My favorites so far for that have been the Jensen Electric Lightning’s and Fane F90’s. Not sure how they are on their own but have the Fane’s crossed with V30’s in my Ubercab and Jensen’s crossed with V30’s in my Kerry Wright 4x12 and both have been a perfect combo for my taste
I actually had the V30’s in the Kerry Wright crossed with the cream back 75’s before like you and much prefer it now with the Jensen Electric Lightning’s. The H75’s were a bit tighter and more defined which I liked, but were too bright and hard sounding with the V30’s yet was also too smooth/lacking growl and complexity. The Jensen’s have this great throaty lower mid growl, much more warmth and complexity and sounds heavier/more evil and it’s cleans are light years better than when I had the H75’s in there. It’s a perfect match with V30’s imo and may also be killer on it’s own too