I loved the brutishnass and power of my 97 TLS, it was unpredictabe and gave me lots of those "moments" (good and bad), whereas the K7 SV is more refined and precise with excellent handling, also I think the K7 SV has about 5ponies less then the TL at 120, but you dont really notice it.
I dont know much about comparisons between the older SVs and the new ones sorry as ive only ridden the 07 SV which im really impressed with so far. I know what you mean about the TLS, once youve owned one youll always want one again!!

Bookmarks