Got a pack of those drip tips when TECC closed down and had a bit of a mega sale (before they re-opened), the one's linked by Cyborg. I'm really not into them. They have a ridge that gets caked in spit, eliquid etc. They don't feel nice. Same with the longer version.
These smooth metal ones supplied with the DCTs are very nice. Bought a resin one to try out as well, but I'm happy with metal (I don't chain vape).
The torpedo ones look smooth as well, so I reckon you might be dissapointed by the 510/901 drip tips.
Of course, they now have the King Kongs in metal if you don't mind having a ming vase plonked on the end