Why just limit yourself to commuting? I have a couple of dynamo lights that I use for commuting on road, and off road, all year round, I also use dynamo lights for midweek night rides in the woods, I've taken it on touring holidays and endurance racing too.
Like Mark, I have made my own, but I am now using the new Exposure Revo light, although I have a slightly larger pre-production model. 800lumens of light, all the time, everywhere I go, plus 10minutes of standlight time too (and it stays on for much longer with a dimming light level, not enought to ride at any speed by, but as soon as I start riding the brightness come right back up again of course!)
To answer your question: I'd recommend the Exposure Revo, it's the brightest out there and, more importantly, has the most powerful standlihgt. the ability to also power your rear light, which will also stay on on the standlihgt, makes it a winner in my books. I'd pair this with the SP (Shutter Precision) hub, as per the recommendations above
Yes, any hub works with any dynamo light.
The SP hubs can be had from IDC this is the eBay store link
Pictures of my Exposure Revo below, with my bike in "bikepacking race" setup, it powered me through 800miles of the EWE. th light also powers Exposure's standard redeye rear light which i use for commuting, touring and winter road use, 80lumens of super bright rear light, this is also kept alive by the standlight when I stop at junctions. Genius!
Exposure revo, standlight after a several minutes stationary
Rear light works from the standlight too
Also below is my DIY setup, only 600lumens from a triple LED setup, as Mark says, a DIY build is hard 9much harder then buying a ready made driver for a battery light) as you have to make up your own circuit, then tune it to your particular components if you want all the function and brightness of an Exposure Revo.
Bike with light fitted but off
Light on standlight (bright isn't it!)
Circuit tucked at base of fork
There's more words and large pictures on my blog post about my DIY dynamo light ON THIS LINK HERE
There's more on my Exposure Revo setup, including a little bit about a USB charging setup that I have also wired in in parallel on my bikepacking dynamo setup ON THIS LINK HERE