Don't be discouraged! 160 range does NOT suck...Sorry can't help you right now because I've been on sabbatical from AAMPs but I used to indulge exclusively in the 120/160 or 140/160 range. It's been so long all my favs are long gone!
Beauty is in the eye of the beholder so I can't guarrantee you'll be 100% satisfied but for me most of the girls were just fine for the purpose. I didn't start out expecting cover girl models so for the most parts I wasn't disappointed.
However my litmus test is spinner (sorry no curvy here) so I think that helped. Just be patient and do your research meticulously. Unless you're a rich guy, $40 is no chump change and it's better to save it for another session or something else worthwhile.
Trust me, once you blow your load you no longer care how pretty the RA was. Rather, you'd be thinking about the next girl and next session!