Must say I think it depends a lot on what you need the saw for. They aren't exactly a precision piece of kit, and there's a huge range of prices depending on the brand. I recently bought a cheapie mains powered model (but with a blade quick release) since it was only for occasional light work (cutting some hard to get at roofing timbers), and couldn't justify paying x3 for a posh brand. It works very well with the right choice of a decent quality blade in - which latter is the case with any saw...

ian