Even spending 500€ on a new crossover wouldn't be too much on this speaker, it deserves it as it still sounds better than any 1.000€ speaker. I've calculated around 300€ for 2x4 polypropilene capacitors and 2x2 resistors. For a bit more you replace all 4 inductors for top of the line components, binding posts and better internal damping.
I tried a Unison Research Unico Primo on them and they sounded amazing, great bass and midrange body, except for top-end. A Musical Fidelity A1 did great aswell, for a bit less drive. Even My 250€ Onkyo A-9010 sounds good on them for the price, but they can do much better.
I've audiotioned the Lintons last week with three different amplifiers (Musical Fidelity M6si, Rega Elicit and Arcam A15). I was about to pull the trigger on a timely discount. They sound better than the DBR62, I agree, mainly because they fill up better. They've got good midrange. But bass is still loose, and treble is similar to the DBR62 (though a bit better). They didn't fully convince me. I'd have to find a better speaker overall when spending more.
I've also made a budget to upgrade all Linton crossover, I've seen examples on it on the web. Costlier than a DBR62 mod, but good reports from people.
I've told myselt that I'd like to try a upgraded one on my DBR62 before passing them on. I've heard them sounding great on good amplifiers. This is my take, and I'm making up my mind.