Buying rubbers

[Solidify]

OK so my girlfriend and I have been doing more crap recently and I think we're going to have sex soon but I have one problem; I don't know which condoms to buy. I've been to the pharmacy but there's literally a couple dozen brands to pick from. I'm aware that the flavors and different colored boxes are just there to give the couple a more sensual feeling but its the size that I'm not sure about. I already tried the SKYN ones. I payed a full box because I thought it was good but when I tried it by myself, it did not fit, width wise, as in, it was too tight. But the length was fine. (btw, I think I have a chode lol) So anyways, how do I know which one will fit me without having to buy all kinds and try them on, that will cost me a fortune. There isn't really like a sizing chart.