Hi Dude
Joekid is quite right and sounds like he/she knows a lot more than me. I just got a 2006 Yamaha DTX SM 125. It has no DEP system just the stock pipes. I had the CDI Unit de-restricted and it has decent Alloy wheels and good tires. I'm well happy with it. Does 70mph in 4th gear and opening it up on a clear road it will arc the clock, does at least 90mph and I reckon if I put in a DEP front and back pipe I'd kill myself on it.
The Super Moto DTX is simply the best 125 I ever had the pleasure to ride. It's road handling is amazing and it corners like no other bike I been on. If I want to go off road on it then I can simply put a set of larger wheels from a DTR on with chunky tyres.
I still got my old 2003 TW 125 and I had a wee go yesterday. I swear to God, after running around on my DTX, the TW feels like I'm dragging an anvil behind me.
Peter -L