There are literally tons of 9mm's out there. get your hands on as many as you can. Maybe the range you go to rents? I'm not the biggest fan of poly frame pistols but there are some pretty good ones out there. Are you set on a 9mm? I have bought a couple 40's recently and am quickly becoming a fan of that round.
Bottom line is find what fits you best and make sure your choice is a reliable one. If it don't fit you well then it's not going to be able to perform at it's best. And if it's one that is not reliable then none of it matters.