I have a 2000 sv650s as well. I use Oxford soft luggage on mine - depending on for how long and how far I am travelling that could be any combination of tankbag, tail pack, and or panniers.
If you go for the soft luggage option, make sure you use some of that soft rubbery matting underneath it to protect your paint work.
https://www.ebay.co.uk/itm/LARGE-LON...oAAOSwnNBXUBhk