Don't listen to the people that say you need to start throwing money in either of those guns. Glocks are totally awesome stock and the only thing that you might want to change out is the sights.
I love my Glocks, but I also love my sigs, so I'm not trying to be biased.
Sigs are also awesome stock. Sights would be one possible change, as well as a short reach trigger if you have smaller hands. But that's about it.
There are other "upgrades" for each that are not necessary but may make the gun nicer to you.
Also, beginners tend to like the Sig more because they only fire it in SA mode. Take that same beginner, give them a glock and a sig, and make them do three round groups where they decock the sig before each one. It would be much more of a toss up to them probably. The DA pull on the sig, while nice to frequent shooters, can be difficult for new shooters.
Go to the range, shoot both. They are different animals in almost every way. The rental guns should also be pretty much 100% stock as well as far as the internals go.
My rule is if I don't like firing the gun stock, I'm not going to buy one and throw a bunch of money into upgrades for it just so I might like it. Some might say something like "But what about the S&W M&P series! It's crap without the Apex parts that make the trigger better!" I call crap on anyone that does. While the stock trigger is different than a Glocks, it isn't bad and the gun is still fun to shoot. Yes, the apex kit makes it even better, but it is not necessary.
I love my Glocks, but I also love my sigs, so I'm not trying to be biased.
Sigs are also awesome stock. Sights would be one possible change, as well as a short reach trigger if you have smaller hands. But that's about it.
There are other "upgrades" for each that are not necessary but may make the gun nicer to you.
Also, beginners tend to like the Sig more because they only fire it in SA mode. Take that same beginner, give them a glock and a sig, and make them do three round groups where they decock the sig before each one. It would be much more of a toss up to them probably. The DA pull on the sig, while nice to frequent shooters, can be difficult for new shooters.
Go to the range, shoot both. They are different animals in almost every way. The rental guns should also be pretty much 100% stock as well as far as the internals go.
My rule is if I don't like firing the gun stock, I'm not going to buy one and throw a bunch of money into upgrades for it just so I might like it. Some might say something like "But what about the S&W M&P series! It's crap without the Apex parts that make the trigger better!" I call crap on anyone that does. While the stock trigger is different than a Glocks, it isn't bad and the gun is still fun to shoot. Yes, the apex kit makes it even better, but it is not necessary.


News to me. Hard use like using them as a hammer? 
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