Charlies for me. Probably because i've seen it first hand more often than the Zen car and everytime it does the business.

Chip, do you know something we dont when you say the Charlie Shaws car is more expensive to maintain than the Zen car?

If anything the Zen car is marginally faster but it was driven by a pro driver in the TA series, where as charlie is just a milkman of sorts

So focus would be my choice