Thanks for the replies, after saying the old saw was ok I've now realized that it's a bit rough when cutting deep skirting as it moves on the sliders. This is due to the chrome rusting..... it's lived in a damp shed for 12 years so can't blame it really!
I think I'm going for the Bosch GSM 8 SJL from Axminister Tools, it's got the cutting capacity I need with a laser guide and soft start motor and a fine toothed blade.
I have to say I'm a bit of a Bosch fan and the quality so far has been good.
I know some manufactures are producing rubbish with their stickers on, more fool them! If it's crap I'll send it back and won't buy from them again.