A few years ago it was one of the very best hydrofoils you could buy. I think Colin E still rides his. I have tried it briefly and it felt very nice. Its all carbon construction is desirable.
Of course Spotz is defunct now so don't expect any new wing options. Overall I would recommend a used Spotz Tuna over many of the entry level products available these days. But of course the latest high end products from top companies like Moses or Alpine are even better.