MF, keep the pull start off the sanli for when the double spring one packs up.
With regard to a pole saw, if you go on ebay, you can get a giantz or baumer-ag 50+cc (which weighs a tonne) model for just north of $240 last time I looked. That is with 2 pole extensions.
Ryobi attachment is around the 180 mark. If you have a ryobi split shaft that will power it well (ie not a ryan engine) then go for that as you can get extension poles.
I use my pole pruner twice as much as the chainsaw. Problem is with long extensions they are bloody heavy and cumbersome.
