My own self written rules of engagement are that I have to stick to making plastic models of any vehicles for my WW2 armies. However, if there is some unusual vehicle required for a unit that is not available in a plastic kit form, I do have an allowance (Clause 8c) that allows me to buy resin or metal vehicles. I guess this would stretch to die cast as well, although I have not found a need for that yet. To be honest I just like making model kits as opposed to having the vehicle already constructed (or in only 3 pieces).
So on this occasion I needed an Anti Aircraft tank or the Centaur AA. I think its based on a Cromwell chassis but with twin AA guns in the turret. This one comes from Britannia Miniatures in the UK, you can buy from https://www.grubbytanks.com
Andy at Grubby has a huge range of troops and vehicles, including a lot in the “hard to find in plastic model kits” bracket that I am after. I also picked up a Sherman ARV recovery vehicle who will be built soon enough, and a Dorchester HQ truck which looks like fun. This Centaur comes in only a few parts, with a hull, turret, two sets of tracks and wheels, AA guns and hull MG. So armed with some superglue it doesn’t take long to put together. I did take a little while cleaning up the resin hull (the tracks and guns are metal), and next time I will spend a little longer doing clean up. The detail is good and it actually made a nice change to be painting quickly rather than building for hours first. I did add an aerial and one bit of stowage (a box) plus I used various decals. Paint job was a simple olive drab, like always, plus a dark brown wash and plenty of dusty powders for rust and dirt. Worth checking out Britannia for their massive range of stuff, I am sure I will go back for more.