I have had both Piko & Roco versions. The Piko ones sat very slightly higher, which wasn't a problem as they were never 'on set' together. Roco offer the old version (as pictured) on the driving trailer, though that may be through eBay, Contikits or show traders. The standard and the newer Wittenberge Steuerwagen are also available. I've only seen Piko ones with the standard Silberlinge.
On both brands I was able to use close couplings.