Hello All,
Have had a Stellar ... very good tent methinks. Particularly liked the integral pitch feature (pitch inner & outer together ... not sure that the Macrolight can do that?) and the fact that the inner tent is a little set back so that you can leave the vestibule open when it rains without the inner getting wet unless of course it blows in that direction. Well made tent.
Haven't seen a Macrolight 'in the flesh' yet, but would think that the ML is a bit more wind resistant & snow capable then the S.
For your intended purpose '3 seasons' the S should be a good option.
Have also dealt with moontrail ... all good.

a.