I had a PBDDI and a regular SABDDI. I also own a Behringer ADI21. I will say, the Behringer has much more low end (and the sweepable mids work). I do not like a ton of grind (I love the clean SVT tone), but the Behringer has a bit of tube emulation. The killer is that the input impedence is too low and for almost every bass I have to turn the volume down so I don't clip the pedal.
Does the Para Driver have those lows (seems to boost at 40hz or so vs. the Bass Driver which is punchier but now as deep)?
I was considering the Behringer ADI21. I figured at that price, whatever if it turns out useless.
But you would advice against it... ???
I might consider a Para Driver or the rackversion, the RPM.
I don't need any grit, just some good toneshaping and DI. And something to color a solid state amp a bit.
I personally don't like the tone of an Ampeg SVT, so a BDDI and VT Bass are not the right pedals for me I guess.

to get the cash to buy the VT Bass Deluxe. I have to say it sounded great but I just wasn't digging it 100%.....for it being $260 I had to return it. I ordered a Bass Driver Deluxe in place of it....it comes today....I am excited to get my old tone back. The Bass Driver Deluxe is basically a PBDDI with an fx loop (which I really want). Lesson learned for this guy.
(everyone likes different things)