On the other hand, the fast charger can get the battery to 80% in 2.5 hours - which perhaps could be a very long lunch break - whereas the slow charger would take 4 hours to 80% - which perhaps wouldn't be of much use.
On the assumption that one isn't usually in a mad-rush to get the battery charged, if you've only got one charger or the other, probably better to have the slow charger, because slow-charging the battery is better for its longevity. I've got two VRS on order....hadn't really thought which charger it might come with until I read this thread. It doesn't say on the Vitus website - which really is the bare minimum of a website (which is kind of good because maybe they're keeping their costs down there rather than passing them on in the end price of the bike). It also doesn't say on the Wiggle site where I placed my order. But now I look at the CRC site it seems that I'll be getting the fast charger, which would really be further kudos to Vitus to give a £150 charger instead of a £50 one without even bothering to trumpet that fact at all! Ironically enough, that would have meant that I'd have needed to buy a slow charger as well once the bike arrived because, for the reason I already gave, I wouldn't want to only have a fast charger. But as I've already got two slow chargers it's good news for me that I'll be getting fast chargers.
So anyway
@Benbenben, maybe start with the slow charger yours comes with and see how you go? That way you give yourself another option: namely waiting for the announced but I don't see anywhere for sale yet EC-E8004 charger (comparison down the page here
E-BIKE ON THE DROPS WITH SHIMANO STEPS )
The thing about this EC-E8004 charger is that it seems to offer barely any advantage over the existing fast charger, except that it's less than half the weight. Personally, if I was sure I wasn't going to transport it anywhere actually on a ride with me I'd go for the seemingly brick-like EC-E6000 fast charger, solely on the basis that I think with transformers bigger = more reliable. However in my case I have cycled to hotels with my bike a few times and had to set an alarm in the night to switch charging to my wife's bike, so as well as a fast charger meaning I didn't have to worry about that I'd also rather not carry a brick, so I might end up buying the EC-E8004 to complete my collection of chargers when I can find it for sale.
Wow, a long and boring post. Hope food-for-thought to someone though or I should have spent my time not typing that! lol