Pros: Super bright, lightweight, and a great value. Simple operation and convenient mounting options.
Cons: No intensity settings or way to adjust beam pattern.
Recommendation: This is a great light for getting into night riding for the first time. If this is your primary night riding light I recommend mounting the Stella to your helmet rather than your handlebars since the beam pattern is a little narrow. Buy two of these - one for your helmet, one for your bars- and you'll be nearly perfect (plus two of these still cost half what ONE Seca costs). Battery life is good enough for most rides (2 hours).