I got a 13 Auto LS. I bought it based on Gronks experience and another mate who had one.
I have not had any issue with it. It has been very reliable. Only problem is that Mitsubishi delaers seem to be dumber than others I have dealt with.
I have pushed mine in the bush a bit and it has gone everywhere I have pointed it with little to no fuss. You have to figure out the traction control though - its not real smart and only works if ur prepared to put your foot to the floor.
If you plan to modify it the fuel consumption will change for the worse. Mine has 2" lift, 32" MTs, roof rack, bullbar and second battery (blah blah blah) and towing my camper it gets 16.6LPH. Around town I get low 13LPH and in the country without the trailer I get low 12LPH.
Only thing I would say against it applies to all small displacement modern diesels and that would be to not expect it to last much longer than 300 000klms without requiring some major mechanical work - it's a cliche but they realy do not build them to last anymore. I will be getting rid of mine around 200 000klms.