@Koby: Yeah DTT is the most fun card to resolve now! Boseiju is nice, but I'm not sure if I want to play 2. Maybe a second in the side when playing the mono blue version =)!
Yes, I'm on the mono-blue version and was using 1 in the SB. Between it and Defense Grid, I think 3 slots is more than sufficient. I did use it to great effect vs Counterbalance however, and that makes all the difference.