As far as the old Peerless Kits go Bob, they are the same ones used by all the other "reboxers" of the 15 cwt and FAT kits--so far, the same old molds have been used by P-M, Italeri, Bilek, Testors, Tomy, and I'm sure a few others.
Still good kits after all this time. Buy them when you can. Lots of others do. I have many.
The Tamiya Kit gives you a nice Ford gun tractor, 12 cab, and a great 239 V8. There's a revised and corrected Eduard photo etch set for the 25 pounder as well, and recently Eduard did one for the gun tractor as well.
David, a friendly word of advice: there are, as Bob mentioned, still good 1/35 kits out there, and now Maple Leaf Models has issued new roofs, spare tires, and frame/driveline and exhaust extensions for the Italeri 101 inch WB kits.
If you want them to sell on the western side of the pond, forget metal, unless it's an odd scale. Not worth the investment. Metal only sells in the UK. And we North Americans can't figure out why
:
Cheers
Don