The closest headphone to the DT1350's signature in a full-size is the T5p. I know this is not much help since you could buy the T1 for the price of the T5p.
The T1 is the better headphone. The T5p does offer isolation and "portability".
The AKG K550 is somewhat similar to the DT1350...and a lot cheaper than the T5p.
If you want another really good portable, try the Martin Logan Mikros 90.