Have had a Stealth, but not an S300.
Stealth lasted erm, a week? I too was taken in by its looks and simplicity of design. Loved the take down aspect, but it is simply a case of a brilliant concept, fatally let down by shoddy workmanship and cost cutting.
S300 is the choice of the two, BUT, I read that parts are becoming an issue to source. Not sure if that is true, but worth investigating.