Toby and Anna know what they’re doing. They’ve got a clear and informative website, they promptly replied to the barrage of emails I fired at them, and they’ve found themselves a great guide (and mechanic) in Chea. Toby joined the tour and rode at the back with a Garmin bolted to his bars, but it was Chea leading us along the tracks and trails and I didn’t once see him consult a GPS (although he did stop to ask locals for directions a couple of times, but that’s understandable when rampant deforestation changes the landscape so dramatically - Cambodia has the third highest rate in the world).
Their bikes are mostly Honda XR250s and 400s, but they’re adding some Yamaha WRFs for the 2015/2016 season. I had a 2005 XR250, which I loved. Their bikes might not be that new, but they’re well maintained and they’re perfect for this sort of thing. They’re gruntly, not fussy about the quality of petrol they get, and thanks to the bits Toby’s had Chea remove (clocks, indicators, etc), they’re fairly light and very reliable.
Toby’s qualified to provide advanced first aid and they also travel with a satellite phone, two-way radios (although Toby’s died on the trip - the dust kills several each season), and plenty of spares (even clutch plates). Everything seems well thought through - they use the second man system for junctions, the rider at the back is the only one with his headlight on (so the leader can see he has a full group), and they do a clear briefing before setting off.