The newer Miatas are alot of fun. I used to work for a Mazda (among others) dealer. Handles like a go-cart, makes ok power, and has a huge aftermarket which matters to me. Turbo, supercharging and more is all pretty low cost for them. The del sol is the bastard son of honda....heavy, slow, to small interior.oi. Id say if u got the money, go with the miata (if those are ur only 2 options, IMO there are better cars around for 10k). The del sol u can sell for decent money, maybe 2800-4000 depending on conditions color and options. Oh one more thing, Miata's are RWD YAY!!!!. Sooo much more fun to race/drift/drive in general.
