I don't know about the Dinotte, but I know the Hope is just one Cree XR-E R2 LED. I use a Cree XR-E R2 torch on my head as a supplement to an Airbike SL2 light on my bars, and it's great for adding more light to the situation for where I'm looking, but on it's own? No ta, DEFINITELY not enough light by some stretch.
If you want cheap, DealExtreme P7 torches really can't be beaten for VFM. If you're prepared to spend the kind of money on the Hope or the Dinotte, and want a neat solution, look at the Airbike SL2 as it's essentially a P7 in a custom housing, with a battery pack that lasts a minimum of 3 hours on full beam and weighs only 350g all in.
For the £100 a Hope Vision 1 would cost you (with some Nimh batteries and a charger), you can get shedloads more light by buying elsewhere. A couple of P7 torches, 4 18650 Li-ion batteries and a charger, would come in at under £70 still, and give you a claimed 1800 Lumens in total!