As a long time MW DX aficionado, in my experience almost ANY AM radio can DX, if you use an outboard inductively coupled loop (the ETON and Terk loop antenna models work well, as does the Select-A-Tenna). I've DXed with clock radios, Walkmen and boomboxes before, using external loops with them.
Most modern AM radios have a ceramic filter, which makes for adequate selectivity for most MW DXing. For heavy duty MW DXing, higher selectivity radios and comm rigs are probably better.
The CCrane EP has a good rep in the MW DX world, as I believe it has a 200mm internal loop antenna (the ad says the antenna is a Twin Coil Ferrite antenna -- such antennas work very well for DX), and I believe the CCraneEP has a tuned RF stage. A lot of guys DX with them.