I will respectfully disagree with you here.
Either one of these (VT or the BDDI) a 1 trick ponys in a live setting, unless you're gonna fiddle around with them on stage.
However, the programmable DI, is not. you can easily do 3 completely different settings, without re-setting them.
The VT and BDDI are a bit different. The BDDI does not have as much "Grind" as the VT, but not everyone is looking for grind, this is where the BDDI works fine.
And of course The BDDI has a balanced DI out, the non-deluxe VT does not by default.
i disagree. the VT is less of a one trick pony than the 3 channel BDDI. the BDDI basically had the same sound, only you can EQ it and toy with the gain- but it was still the same tone, just with more or less dirt. with the VT, you can get a lot of differnt textures with the character knob, then EQ, and adjust gain to your liking.
i had a BDDI that i really liked, but sold. i have a VT that i love, and consider it a neccesary item to have.
because...