i use time atac on all my bikes, lots of float easy to clip in and out, i tried using my northwave, nike and cannondale mtb shoes (trainer type) but found them too flexible riding on the road so now have a pair of nike mtb 'race' shoes with the 3 straps, they are much stiffer and tighter fitting so my foot doesn't move up and down, they look like road shoes but have a grippy sole so you don't skid around when walking on shiny floors.
i use time atac on all my bikes, lots of float easy to clip in and out, i tried using my northwave, nike and cannondale mtb shoes (trainer type) but found them too flexible riding on the road so now have a pair of nike mtb 'race' shoes with the 3 straps, they are much stiffer and tighter fitting so my foot doesn't move up and down, they look like road shoes but have a grippy sole so you don't skid around when walking on shiny floors.