I don't like starting BV on Singed unless the enemy is filled with undodgeable CC. Remember, as the tank you're supposed to be encouraging them to waste stuff on you. If you start BV the enemy team is more inclined to ignore you because 1. You ignore the first CC. 2. Your damage is lower than with RoA.
I've got a 70% win record with Singed so although I'm not 1700 ELO like FD I'd like to think my opinion has some merit too-- hell it's probably more relevant to the ELOs you guys are at anyway as high level strategy is not always optimal if you're not playing at high level elo. (that's not to say I completely buy that Banshee's Veil is always the superior buy at high ELO either but just saying)
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No problem!
This is a cute and pop genocide of love!