the weights a pretty close ( although the ariel is smaller ) but i do stacks of georgian windows where the sl is slightly too wide but the main problem with the SL's is i think the stock is too soft - the corners wear away rapidly and i am already losing bristle bunches ! - this is after 8 months so not a big concern, i also have an idea to fit a quick release scrubbing pad to the head but the sl stock is to wimpy for this,
and lastly i like to try new/different items in the quest for the best possible set up that works for me.
Darran