The BMW 3-series Convertible has a more luxurious interior and superior driving dynamics, but costs much more when similarly equipped. The Volvo C70 is better value with a more spacious trunk and back seat, but isn't as quick and has inferior in-car technology. The Audi A5 Convertible forgoes a folding hardtop, but has a well-insulated soft-top and available all-wheel drive. It's more expensive, though. The Lexus IS Convertible has a lower base price and nicer interior fit and finish, but the base V6 is much slower and it's less agile.
The G37 Convertible appeals to buyers who want something luxurious that also has good driving dynamics, without going for one of the obvious German brands. It isn't the last word on quality or space, but it's very well equipped. For someone who places style and performance high on their priority list, the INFINITI could be the right choice.