[jyl]

I've had good luck with these three tail lights
Cygolight Hotshot Micro $35
Serfas Thunderbolt $40
Knog Blinder 4 V $45

They are listed from most favorite to less favorite.

For headlight, I have been using Chinese cheapo lights with a single Cree XML T6 LED. They cost about $25, including battery and charger, last 1 to 4 years (quite variable quality), plenty bright. However, now that brand name LED lights have come down in price, I'd get either

Knog Blinder Road 3 $47
Cygolight Metro or similar model, with about 400 lumens $45-55

400 lumens is plenty for commuting in the city. More than bright enough to be seen, and bright enough to look for potholes at 15-20 mph. Much brighter headlights are not necessary, and rather irritating to others, unless you are going faster in total darkness, or mountain biking when you need to see the subtleties of roots and stones.

These lights are all USB charging. Run time for the taillights is very long, especially on pulse or blink. Runtime for the headlights is usually around 2-3 hours on high, longer on low and much longer on blink. You will probably want to charge the headlights every other ride. It's very convenient.

If you will be riding on the road, I would suggest mounting the headlight to your helmet, angled so it points at the road when you are in your normal riding position. You can lift your head and aim it at what you want to see or what you want to see you. A bright headlight in the windshield gets a driver's attention when he is about to turn in front of you, ditto in the rear view mirror gets his attention when he is about to cut you off. Then a cheap white blinky on the handlebars. If you will be riding on bike trails, then handlebar mount is fine, since there aren't drivers to worry about.

Also if you will be riding ing the road, reflectives are very good for being seen. Everything from tires to clothes comes in reflective now. And a $2 roll of reflective safety tape will take care of the rest. If you're riding on bike trails, then reflectives don't matter much.