Front is also a BT 023 but nothing wrong with it so plan to keep that on for a while. was leaning towards the T30 as would be a closer 'match' to the 023 on the front. probably one of them silly trails of thought to keep tyres same brand when in reality probably no benefit keeping same tyres.
I've got them on my ZX9R, and have also had both Bt23s and Michelin Pilot Road 3s. out of the three, I prefer the angels; they're not quite as grippy in the cold and wet as the Michelins are, (which I found to be better than the Bridgestones), but in the dry they're superb, loads of grip and a slightly pointer profile which helps tip the bike on its ear and keep it steady whilst cranked over.
That said, if you're not commuting or touring, why get touring tyres? If you really are just going for blasts I'd probably suggest getting a proper sports tyre, something like the bridgestone s20 might suit if you're used to bridgestones?