I think gunjack was just getting at the electronic instrument manufacturers (and maybe scientific) idea of ideal dance bpm which according to Yamaha is 142bpm. TBH, when you're mixing stuff the bpm is changed anyway and I think it's probably best if your pressing vinyl that you keep it in a bpm range which will at least give the DJ a chance to mix it into other tracks :)
Although checking the numbers now, my tracks will only drop speed to 138bpm :/
4AM rinse it is then!