i would never buy a gun without at least holding it in my hand.
if its not comfy in your hand your not gonna shoot it.
its like a scope. i would never buy a scope over the internet without being able to look through it.
every scope is different and you wont know if you like it till you look down it.
take a hour, go to a store and ask to handle a couple different ones.
see which one feels right.
i was rather shocked to find that i cant stand how Sigs or Taurus feel in my hand.
and the S&W M&P felt like a warm hug from grandma.
keep in mind weapon weight.
a 1911 compared to a glock is a massive difference in weight.
also some guns (like glocks) sit really low in your hand, they barely clear the top of your hand.
where as the M&P's feel like they are sitting 2" higher up.
also some guns are a lot thicker, which if you have big mit's wont matter, but if you dont like a thick gun then you wont enjoy shooting it, and wont shoot it.
i found a while back which ones felt good and ive been loving all my purchases and shooting since then.
i also found the manufacturers seem to stick to what they know.
so for the most part i know i can buy any Ruger and ill like the way it feels.
some with Smith.
but the feel of a Sig in my hand makes me vomit in my mouth.
so if you find a maker or a style that feels good you can pretty much stick with them.
in short.... asking 100 people what you should buy isnt gonna do much for ya, your gonna need to get some in hand to make a good purchase.
once you find what feels nice then asking about problems and fixes is what you should be doing.