personally, i quite like toby's john. it fits him well, my main problem is with the script wrting. Cherami's rose was really good and i prefer it to the posh british lady voice so many fanon dubs give her, i think it could be a bit higher pitched at times though personally. jade (forgot her va's name), was pretty good. yes it sounds a little young but thats something that can be changed, other than that it sounds quite fitting for jade. having it be a bit deeper could help, but i think that its pretty good for the most part.
... and now for the big one everyones talking about: dave. in interviews, the va's voice sounded pretty good for dave, i could see dave sounding like that 100%. HOWEVER, my problem is the way he talks. its too energetic. I don't nessecarily want a monotone dave, thats something we've gotten too many times and dave should have an energy in his voice that sounds almost rhythmic in my opinion, subdued and suppressed but still has energy, if that makes sense. Dave in the pilot was way too over the top, and im 99% sure theyll change it in ep1, considering its hte biggest complaint about it so far.