I got 17 plate one swb, all around Nice van, looks good, especially in dark grey, they are fairly powerful and got a eco mode which saves me a lot of money in diesel when I drive around town, the only thing is, it goes sluggish as s**t once you in eco mode. I never had issues with the van, well maybe one thing which is a light coming on my dash with a message "check anti pollution system " it doesn't affect anything, been to vauxhall specialist many times and apparently it's a fault between battery and engine computer or something, so I'm not overly worried about it as it drives as it should and I think its quite common with vivaros. The inside is nice and got comfy seats arm rest etc, I'd add more cup holders if I could change anything, I got lcd display with mine so can listen to Spotify etc and got a sat nav too, although never used it. I haven't got heated windscreen which is a downside in the winter but if you turn blowers on it doesn't take long to defrost, I think customs are better equipped and better interior quality but that comes with price and that's why I went for vivaro.
Overall really nice van, I'd probably get another one in few years time.