Don't know really, depends what a collection is I suppose, Northern wise, only got a handful as I have to sell them for a living, I have 400+ ska/reggae/rocksteady records but those are handpicked, not just anything that crops up, thats my real collection, I have a box of about 400 new wave/punk/post punk 45's in the shed, and maybe 1000 what you'd call 50's to 70's pop records in boxes in the shed as well. Got no room for them in the house. Rarely play anything except the reggae as I have everything in itunes. I'd say I probably have around 75,000 'tracks'. Nobody could ever listen to that lot in a lifetime.