I wouldn't pick the woman. That's basically like forcing someone to love you through some supernatural power, it wouldn't feel genuine. Sure it'd be awesome introducing your girlfriend to friends and family who looks like Jessica Alba but who is to say you wouldn't get bored of her? Even if she was your ideal perfect, chances are you'd want to get involved with other women before settling down. So considering this, I'd pick the Iguana. But if I could have a Pokemon, I'd choose Machoke so that I cold have the ultimate bodybuilding partner. Either that or some huge flying type so that I could ride him around the world.