I travelled a similar road. I started lusting for a 1997 Green TLS. I wanted one badly, but they were $9000.00 FFS! So I bought a GPZ 1100 for $7000. I crashed it, and bought a ZRX, it had just come out in 1999 and I had to have one, I missed out on the ELR in 82. :banghead. So I loved the ZRX until I went to the track for the first time with it in 1999. It was too everything, too heavy, too flexible, too hard to turn and stop, etc.
So I bought a 2000 TLS, for $7000.00 new off the showroom floor in 2001. This bike started my track riding and fueled my V-twin lust. I loved it, then it got stolen. So I bought a 2002 TLR, new, for $9000.00 or so. Got the TLS back and sold it to modify the TLR.
The TLR ultimately got about $16000.00 of my money including purchase price. But I loved it, until I got tired of fixing the thing :banghead It was the first bike I got my knee down with.
Then I traded mr TL for a DR-Z400SM. A fabulous bike, I missed the big bike on the highway, but I loved the DR. Traded it for a TLS to ride to work :lol Which I added an Ohlins to, I revalved the compression and rebound in the front, added a Single sided exhaust and rearsets. Great bike, but being an old TLS, it broke a lot, so I traded it and my SV I had at the time for my 07 Gixxer 750. Immediately it was a better track bike by 50% than even my TLR with all the mods :banghead
Finally I was down to one bike, the Gixxer and I loved it. But I wanted more. A Buddy bought a K1200RS and needed to sell a 2003 Tuono. Well friends, I had lusted for an Aprilia for a long time, a Tuono mostly, but I loved me some Mille too. Anyway, he made me an offer I couldn't refuse, and BAM, I own a Tuono.
Hands down, this is my favorite bike ever. It is a perfect blend of TL fun and Gixxer handling. I always enjoy riding it. I love to work on it (very few opportunities unless I am modding it :banghead) and I am going to paint it black I think. The sound is awesome, it will wheelie on a mere thought, it has brakes that are way better than my Gixxer. The suspension is pretty dang good. I will probably find a way to get another so I can have a factory or an R. I think any year is good, I have a 2003 with serial number 22, so I would bet they were good from the start.