Well, I'd buy the beretta over the taurus, but i've heard some good things about the PT92, but I'd spend the extra cash and get the 92 if you go that route. I've been on the forum for not that long of a time, but, your question has already been answered many, many, times in the archives. My advice would be to purchase a pistol from a well respected manufacturer as the ones you have mentioned because 100 to 300 bucks ain't worth risking you're life over if the pistol didn't work when you needed it to, especially in a semi-auto. Reliability is #1, if there is a chance you can rent and shoot the pistols you've mentioned that would be optimal. I'd likewise do U-tube for reviews. It basically comes down to experience on what "you" shoot well and what feels good to "you" once you choose a well respected manufacturer. What might feel good and shoot well for me, might not be for you. Are the grips too large, or too small for your hand, do they fit like a glove? Interchangable backstraps come with the G-gen4 and M&P. Some can't shoot DA/SA's well, some prefer the consitent striker fired triggers, I myself prefer DA/SA's and do well, but it may take a little more work than a striker fired pistol? The pistols you've mentioned should all perform well so that shouldn't be a problem. 9mm is fine for begginers as well as experienced shooters in my opinion, but you have those that won't shoot anything less than a 10mm. You don't want to get caught up in everyones opinions or should i say weed out the opinions from very good advice. My experience with Beretta pistols have been exceptional, however, others with Glock; M&P FNX-9 and the PT-92 I'm sure you'll find as well. I think you'll make the right decision, but if not, you'll find out from experience, but your okay because the pistols mentioned should all go bang when you pull the trigger. P.S. off hand I know the moderators on the forum have given excellent advice on the topic, they been there done that.