I got one of the bundle deals from Spa a while ago. It is an SP hub with a B&M Luxos U light, mine came with a cheaper back light than the package, but they have gone up a fair bit since and whilst it was over your budget at the time I think it is nearly 50% over now. I have successfully used mine to charge my Garmin Edge Tour (lights need to be off for it not to be a PITA with slow climbs and stops, no additional buffer battery required), although the one time I really needed the facility I was so delirious through exhaustion, sun, and heat that I forgot about it. I think it is probably the cheapest route to reliable USB charging as well as lighting.
I am not overly impressed by the build quality, and the stand light on the back light gave up for a while, but seems to have come back to life now, presumably through improved dryness (I don't think it would like to live out in the rain any more than a cat). I am, however, enormously impressed with its ability to provide useful light at all speeds from a slow walk right up to freewheeling downhill speeds. It claims to be about as bright as the EdeluxII when all of the LEDs are lit, it has a kind of high beam function although I've never felt it actually improved how far ahead I could see, or the level of detail of stuff I could already see. I think. I'm not sure if there are any other lights that provide this range of useful operating speeds. If you value useful light at low speeds and the USB facility enough then it is perhaps worth considering the additional cost. Anything else it offers, such as the great spread of light, is almost certainly available without those facilities at at rather more favourable cost.
