The TP Bonus Stingray is horrible.
The WS DMG Stingray is mediocre, I generally swing a 50% WS 15% ability 35% melee split, so 10% WS damage is going to lose out to the ~8% higher damage of the Contus, given that that helps *all* your damage, not just WS (not to mention the attack, conserve TP, and double attack that will have some sort of marginal benefit)
The STP Stingray may be better than the VC, depending on what you're using to 5-hit the VC without the 13 sTP in the weapon slot, it's what I use so I can use Red Curry instead of Carbonara, Thew Bomblet instead of White Tathlum, etc..
Edited, Apr 24th 2011 8:24pm by LafingCat