Like Crash said, its going to depend on your tracks that you ride and what feels comfortable to you.
Throwing a 1k around a track with tight turns and short straights can be tiresome without the extra benefit of the 400ccs.
Salvage titles do come from the person filing a claim against their insurance company and the insurance company deeming that it costs too much too repair or unsafe if repaired. In many states; this can just be from 1 scratch to the frame or swingarm.
'07 CBR600RR Track-Only Demon!
'12 Aprilia RSV4 Factory ~ Crashed/SOLD
'07 CBR600RR Black ~ SOLD
'09 CBR600RR Phoenix TrackOnly ~SOLD
'09 CBR600RR Red/Black ~SOLD
'07 CBR600RR Blue/Silver ~SOLD