if you still have your gixxer 1000 keep it and don't waste your money. Gixxer with some updates are much faster than busa. busa it's a good bike but too slow, just my opinion.
The gsxr1k belongs to one of my best friends, who drives a truck.
So I do the work, maintenance, and ride it like it's mine, as it's lived at my house all it's life...so a good deal, lol.
I currently own an 05 Suzuki Drz400 dual sport, that I need to fix a few things and sell, but it's tagged and insured.
I have a 2012 Kawasaki Concours too, but, I'm going to sell or trade it for another sport bike. It's great, no complaints, I just can't do bars that high, very comfortable, but not normal to me.
As for the Busa, the gen2 is my favorite bike engine, but the bike isn't comfortable to me. The small seat and tank changes were a big deal to me(I sat on a gen3 almost a year ago).
I like the size and power of the Busa, it doesn't have to be the fastest for me.
I can stand a few newer bikes being quicker...but know that I wouldn't be as happy riding them.
And, in all seriousness, I want to supercharge it, wheels, suspension, brakes, stack of tires, etc
Thats alot of money, the mods cost what the bike does, so alot to consider.
In the meantime I'll keep riding my cheap and free bikes, and even though I complain about prices and gen3 with some unresolved issues/brakes/starts/qs lag...but I Still want one, lol...a black 2023
we'll see