The wish of "Eating a Monster" on an SV is a common one among owners of the bike,
$8k is a waste of money for an SV, when you could buy a new EX250 and roast the majority of posers riding 916s in the twists.
although an old guy on a M944 who has been part of the marque since the bevel drive SS can catch one out on a new gixxer,
But all other things being equal and removing rider skill, the two bikes are quite different,
the SV has a frame similar to the TLs which wasn't that good for the motors output.
the Monster has a frame similar to that of the 851/888,916/996 which has won lotso' WSB titles.
the SV has a budget suspension, with skinny rightside-up forks, and skinny tires.
the Monster 900 has decent suspension, and take offs from 916s can be bolted on cheaply, and if you want a single sided swingarm it is no problem either.
for the Ducati you can get 916 take offs as well, or you can get those Di-mag carbon wheels and try your luck,
Stay away from the liquid cooled Ducatis, they like to break, the air cooled engines have been around forever and will still provide the go, although not as much of it, but a 900 will get more than a 650
you can decide that for yourself, I think it an easy choice,
Motorcycles are not good investments, but there is always that fool that will buy the bike in the ad that says " over $30k to duplicate, best offer over $15 grand, no looky loo's "just 'cause it's a Duc,
older SVs have held their value well as it is cheaper to buy a TLs or SuperHawk,
your question is a good one and I would like to see a stock SV650 against an M620ie on the track, along with a Hawk GT(if any are left stock)
here are some links that may be of use,