The 1997 frames were probably some of the first V-brake only frames from Saracen and some of the last nice framesets before their rapid decline towards the BSO.
I have a 1997 ProTrax which has Tange tubing and a 1997 Kili Comp which is made from Reynolds 853. I also have a low end 1998 HardTrax with 5098 series Tange tubing. It's a bit heavy but it's not a bad ride.
None of them are for sale but should give you an idea of what period to look for.
As far as I know, by 1999 Saracen's decline was in full effect.
I rode for SARACEN for 4 years 2002-06, I have an 05 Kili Flyer Team Frame (Magnisium) 20" which is all be it in need of a repaint in good condition (no dings). This was a superfast XC bike that built up really light I nabbed a 2nd Place to Jody Crawforth in 04 NPS at Sherwood on it. V or disk comp.