I would recommend a Yamato 1/48 scale VF-1 toy, as the look good, are durable and there are many colour variations to choose from. As to whether you choose a VF-1A, VF-1J or VF-1S, that is up to you and depends which one you think looks best.
I'd also recommend the new 1/60 scale Yamato YF-19 toy. It looks fantastic and so far (touch wood), seems durable.
Although the 1/60 VF-0S & VF-0A toys look beuatiful, many people find the joints on the VF-0S too loose (although I don't think so). The VF-0A seems to be having some serious problems recently with the shoulders and biceps cracking, so until Yamato improves the design of the upper arm, I cannot recommend this toy.
Graham