There is certainly a better choice of “performance” tyres in 15" sizes.
The Mazda 15" wheels that MX5Parts are selling look fine to me. Wouldn’t grumble if they appeared on my car one morning, but seeing that MX5Parts are out of stock on these at the moment that wont’ be happening anytime soon …
Be careful of the weight of some of the cheaper brands, heavy wheels will screw up the handling of your car. Maybe find a nice set of Watanabe 8 spoke wheels on e bay, these are the 15" version