I almost bought an SLX 35 in the sale but held back as I worried about the flex. Thought more about the extreme + 44' (I think).
From reading a fair bit the obvious thing will be the pole rigidity. This is a big thing for me as it's a real drain using a pole that's too bendy as it just amplifies the weight of the brush etc.
I'm at the cleaning show in a couple of weeks or so and will be trying as many out as are there and then most likely buy based on how the poles feel.
I can't see Gardiners as exhibitors, which is a shame as they would be my favourite pre-show. Anyone know if they are going?