Someone's going to barge in and tell you anything in 9mm is crap
.
Then someone's going to tell you that all Glocks are a POS
.
Then someone else will tell you the same about the SIG
.
So you will be little better off than before
.
Best to rent extensively at ranges and make your own mind up
. Glocks and SIGs both have their lovers and haters, and at the end of the day it boils down to personal preference - how well each fits you!