Assorted Merrells for me - though more the walking shoe / boot than out and out trainers. When they get knackered, they end up doing a stint as gardening shoes before they finally go to that great shoe cupboard in the sky. I find Merrells really comfy - important, as I spend a lot of time on my feet.
Karrimor used to be really good VFM, but for some reason I no longer find them comfortable. No idea what they've done to them, but they now pinch in all the wrong places and aren't supportive. I have had some expensive walking shoes from Mountain Warehouse - really hard-wearing and the soles were very grippy when it was wet / muddy / icy, but they never truly "broke in" and weren't as comfy as they should have been. Plus the insides (heel and tongue) fell apart after a year's wear.
For futzing about at home, I'll wear crocs or croc clones.
My weakness are driving shoes / boots. I currently have two pairs of Adidas, a pair of Fila, a pair of Puma and a pair of Sparco... Mind, they *do* get used, as some of my walking shoes are far too clunky for driving in.