I've been looking into this too, and have come to a few conclusions...
the Qubo, in top Diesel spec, which is the only one to have IMHO as it has the essential A/C and the folding forward front seatback - as an extra I think
comes in at just over £13,000. This is £4000 more than I paid for my equally well specced Doblo - bar antilock - back in '03. OK, the Qubo has electric mirrors, but I don't want those anyway
I love the Qubo, and it ticks pretty much all my boxes - I love sliding doors and the driving position is great - but, and this is a deal breaker, the 75bhp Multijet just isn't powerful enough. Yes, it gets low emissions, but 0-60 in 16 seconds is just hopeless. My Doblo is about four seconds quicker. I would expect that they will fit the 1.6 Diesel at some stage: this would give the same low emissions, better fuel consumption, and decent performance. But until they do...
oh, and there is a rumour of the 90bhp 1.3, but this is a peaky torqueless thing and I wouldn't want it.
Another dilemma comes in the form of the new Citroen Picasso C3, which does pretty much the same thing as the Qubo, but with clever folding seats and more powerful and probably economical 1.6 Diesels: and the one of these that gives me all I want and more (except the slidy doors) is only a few hundred more than the top spec Qubo. At the moment the Picasso, which has rave reviews and arrives in March, looks like the better bet.
I have not spoken discounts here because that is another matter.
The Doblo was launched in 2000 with a rubbish selection of engines and I fully expect the Qubo will within a year be offered with the 1.6 Diesel. Also, Fiat has other new engines coming soon, so I'm hanging on.
By the way, the Qubo is made in Bursa, like the Doblo.
PS. Manufacturers are putting their prices up now. Ford and Vauxhall have just raised theirs by about 4% - the falling pound!