Check out the reviews -
Versa - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=115699
Fit - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=115699
Yaris - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=109860
Accent - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=115397
xA - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=99256
xB - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=96931
Note the Accent and Scion tests are not the current model year, but there haven't been major changes since these reviews.
Even though the Versa looks like the best tradeoff in terms of space and price, I'd worry about its reliability. Nissan has been cutting corners of late and even worse this is basically a Renault design. Hyundais on the other hand have been getting better, and they have a great warranty. The Yaris is built to a price and shows it. The Scions and Fit will likely have the best reliability, but of course they cost more.
What about an off-lease xB?
Versa - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=115699
Fit - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=115699
Yaris - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=109860
Accent - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=115397
xA - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=99256
xB - http://www.edmunds.com/insideline/do/Drives/FullTests/articleId=96931
Note the Accent and Scion tests are not the current model year, but there haven't been major changes since these reviews.
Even though the Versa looks like the best tradeoff in terms of space and price, I'd worry about its reliability. Nissan has been cutting corners of late and even worse this is basically a Renault design. Hyundais on the other hand have been getting better, and they have a great warranty. The Yaris is built to a price and shows it. The Scions and Fit will likely have the best reliability, but of course they cost more.
What about an off-lease xB?