Why on earth would "lighter on the helm" attract anyone on a long haul?
I remember 27 days with a long keel and heavy helm.
I would not trade it for anything.
But then again, maybe if I had a lighter helm my boat would have been more fun, or "sail better" or something?
Try a long haul sometime on that Benetau. Steer it manually too. Then try a long keeler with a heavy helm. It'll be educational. But don't compare the two ships around the marks on a day race, or you will find that you will like your Benetau so much that you will never touch a long keeler ever again.
Better still, take your Benetau out into a mid Atlantic gale, wait for the rollers to build, and run before them off the quarter. When you do, you may find helm sensitivity is not one of your priorities. Nor speed.
I have done a long haul with a long keeled ship. By contrast, a single afternoon with a deep fin convinced me it was not for me. It was fun, but I wouldn't want to own it. That decision was nothing to do with the age of the ships, or materials, or computers.
No. Deep fins are simply not for me.
I don't like them.
Give a ship like this a fair trial...
.... in the rough stuff, running before a big sea.
You may get to like that keel more than you think.