I much prefer natural breasts. I don't exclude wgs with fake tits out of hand but it would be much harder for them to make my hot list. I would look at her complete level of attractiveness, face being the most important, then her overall figure not just her boobs. If overall I still think she's hot, despite having fake boobs, I am quite happy to punt with her. I do like big natural boobs but at the same time I much prefer small naturals to hard spheres of silicone. Overall, she would have to be quite something for me to overlook her "enhancements".
I have had some good punts with wgs with fake tits. The funny thing is, I find that they are always asking me to feel their fake tits, far more so than natural girls. So I then politely say, "oh they feel lovely" when in actual fact I feel like I'm groping a skin covered medicine ball.