I've recently built a number of both Parkside and Slaters wagon kits, they go together easily though as pointed out, some brake gear can be a bit complicated. A point to bear in mind is that whilst Parkside kits come with decals, not all of the Slaters ones do, so there's extra expense involved. I've found that with Slaters kits like the 'BY' van and bogie brake coach, these oddly don't come with couplings, and the etched bogie version of the bogie brake coach is (as mentioned by Rob Pulham) an exercise of 'Origami in brass!' Certainly the plastic bogie version would be far easier. Keith.