Eric
Administrator
Re the Siocast I've got the Heresy Miniatures Ghouls in both metal and Siocast and I've not found any issues with painting the Siocast so far - just primed with airbrush and Vallejo primers so nothing crazy. What kind of issues have you run into? To be fair the Siocast ones are very nicely detailed, but no more so than the metal ones. Here are two side by side since they are on my desk right now.Don't like the way it (doesn't) take paint, or the feel, or the way you can't do anything to straighten out bent bits.

Luckily I've not got any bent weapons or anything, but I can see with the siocast plastic being softer than normal hard casting resin that might well be an issue. With some of the PVC type board game type miniatures getting bends out is nigh on impossible, I guess maybe it's a similar woe. Getting rid of mold lines on those sorts of models is also very difficult. Zealot have a Siocast machine if you want to see if they have any advice, they have always been very friendly and helpful when I've contacted them in the past and they might have picked up some secrets now!
The first Ian Miller KS was in metal (bar the odd large miniature cast in resin), so I'm surprised this one isn't. I certainly prefer the heft of metal models in my hand, but to be honest I do prefer prep work on (hard) resin and plastic - which is probably more to do with the matte quality of the materials enabling you to see properly what you are doing! There have been times when I've primed a metal model and then gone back in with the file to get rid of a mold line I just totally missed. I guess since most of my models then sit on shelves I don't think much about what they are made of - I expect if I were pushing them around the table lots I might prefer the tactical advantage having lumps of heavy metal to hurl at your opponent provides

Speaking of mold lines you can see a large on on one of the Ghoul's faces, whichI either missed or couldn't face (no pun) tackling at the time. Missed I expect looking at the actual model now where I just don't think I saw it *gaaahhhh*