Well, overall they're good models and should give you many years of running. The couplings are reliable too, even if they lose the springs. The same cannot be said for model knuckle couplers. Heh. You might want to try rigging up some of your H0-scale rolling stock with tiny hooks (which may be easily fashioned from cut-up paper clips) and get some miniature chain. That way you can couple them to the Bachmann Thomas engines, should you wish to do so. Anyway, Thomas, Annie, and Clarabel should provide both an interesting sight and a good passenger service for your setup.