http://www.lidl.co.uk/cps/rde/xchg/lidl_uk/hs.xsl/offerdate.htm?offerdate=31749could'nt resist at that price, went in to get a drink and a sandwich but saw them on display and thought hang on, went back out to the van and grabbed my backpack, tried it in one on display fits perfect ( extendable handle is a little flimsy but usable )
has compression straps on sides that I reckon you could carabina a shoulder strap to.
Also has a front zipped pocket you could hold extra microbore/pole hose in.
Only thing needed to do is to mod the backpacks on/off switch so its on top by the handle ( easy job, others on here have done that )
anyhow, might not appeal to everyone but thought I'd share !
Simon