Yep, similar problem over here ... too many cars and too little space
Do you have a specific order for these models ... it looks a bit mixed now no ?
I actually used the Besta series from Ikea, with the aluminum glass doors as they allow the largest 'look through', I have three Inreda glass layers per 'box' and each can hold four 1/18 models side by side ... but three or only two looks so much better
I should be getting some shots of the collection in my living room inside these Besta cabinets
Mark