The B&M stuff is good, but I'm not sure that front light has a switch, nor am I sure if it has a standlight.
To be fair, I have a low-end dynamo hub whose drag doesn't change noticeably when I switch on my lights, so even though I have an upmarket front light with a switch and a "senso" mode, I leave the thing on all the time while riding. For my application, I probably should have bought one of the cheaper models, but I'm not upset about it.