Looking for a recommendation for a good quality power bank for charging laptop, ipad, iphone, bluetooth speaker(s), camera, iwatch charger and rechargeable torch. I have multiple usb points in the van, however, it often means I have devices plugged in all over the place and wires trailing everywhere. I would rather charge one brick up and plug them all into it in one place. I have a number of the cheapies, they do not deliver anywhere near claimed power and would like one powerful and reliable unit, if it delivers I do not mind if it is expensive. I am not looking for a solar power station just a block of reliable power. Any recommendations appreciated