I had a 1999 ZX7R P4 from 2003-2004 and I still remember it fondly.
Lovely tractable engine with a really gutsy midrange. Sounded fantastic even on the standard can too, but sometimes it felt like it just needed a little bit more top end. Mine was completely standard - original jets, original exhaust, not messed with at all. I'm sure if it had been a major issue (it wasn't), I could have sorted it. These have been raced for so long you can do almost anything to them.
I remember the handling making me feel inadequate - you'd pitch it as hard as you dared into a corner, it would lazily roll on its side and just sit there and go round the corner as undramatically as you like, as if to say "is that all you've got?". Never once did it twitch, ground out, or do anything other than follow the line millimetre perfect as asked. So much feel as well which made you confident to push hard.
Awful riding position. I know, it's a superbike not a tourer, but blimey. Proper chiropractor stuff if you tried to ride it all day. Could never work out how such a physically big bike could feel so cramped. While I'm moaning, the cold weather carb icing was a royal pain in the backside as well. There's a filter on the coolant branch that goes off to the carbs which needs cleaning out regularly, but this made no difference on mine. It was truly rubbish in Winter.
But the best bit was the looks. How many vehicles of any description still make you go gooey when you look at a photo of them 5 years after you've sold them on? It was stunning to look at (in green of course), and I'd often just spend time in the garage looking at it after a run, listening to it ping and tick itself cool, and admiring the lines. It is a bike you bond with on that level. You forget the bad bits, and just enjoy it for the sheer soul of the thing, and the way it's such a lovely thing to own as well as to ride. If I could have two bikes, including one that worked properly in cold weather and wouldn't kill my back riding it every day (getting old), I'd buy another one tomorrow.