Transit! LOLI'm not sure about that. The MX-5's boot is pretty shallow and not much bigger that the VX. I find that you can cram a lot of soft squashy stuff above the wheelarches on the VX. Also the VX has the space behind the seats which takes loads of stuff.MX5 however has more than both the VX or the MR2
Anyway, if you want a two seater with loads of luggage space you want an MGF. Or a Transit.
I didn't realise you had space behind the seats my elise did not have this tho the exige does.