Big fan of the new battletech stuff. Wish they came on sprues though as that would make finding and dealing with the mold lines easier and allow you to vary the poses a bit more.Tbh I'm really enjoying painting Battletech minis at the moment and they're bendy PVC (not as bendy as Reaper Bones but similar to Zombicide minis). They have some fairly bad mould lines but are the most durable gaming minis you could ever ask for.
If you want really bad though I've just been assembling an old Ral Partha Warhawk/Masakari model I bought a couple of years ago. Terrible casting, torso mold has badly slipped, details not cast properly and ridiculous amounts of flash. Urrgh.