Jonty,
I like Tuckers, used one at uni (when I could get it). Then there was a DJR; excellent, very sturdy, but not enough ground clearance for lumps on the firing point, like carpet beading. However, I now have a Freeland.
If you're offering a Tucker for the cost of a twiddly bit, I'll have it, and Robin can buy my Freeland (very reasonable price).