looking to trade for paper tape reader/punch

I've got both a DSI 2400 and a GNT-4601. Both are fine. The GNT is a little more modern, smaller, lighter, but be warned, there are a lot of 5-level versions of the machine out there (TWX/telex use) but I think all the DSI machines are ASCII. The DSI is a little more rugged. Both are RS-232 with hardware flow control. The GNT does three speeds, but the DSI one speed (mine's 2400), I have no docs for the DSI and 2400 is as fast as the reader/faster than the punch so I don't care about increasnig it. I had to make a funny cable for each (just juggling handshake lines, nothing serious). Both punch mylar just fine, though I suspect the DSI will last longer doing it -- but since it's a semi-production looking machine, they might be worn.