After a lot of humming and hawing (because after some recent tube upgrades in the Croft, it's sounding better than ever, and I just wasn't sure if it was worth investing in a quality passive), I've said 'fuck it', taken the plunge, and ordered an SA4M-47:
...with 50K stepped attenuators and black satin knobs!
It's due to arrive in 5 working days time, so should be here for next weekend. Let's hope it turns out to be a *viable* alternative to the Croft, and doesn't end up as an ornament!
Oh, I'll be putting my Tisbury passive up for sale, so if anyone fancies a good deal on that, pop me a PM.
Marco.