Sig or HK
Both of your finalists are great handguns. It probably depends more on your personal preference at this point than anything else. I know people who carry and who are satisfied with both. The Sig will probably give you better accuracy, while the HK would probably function under more adverse field conditions (not a concern for home defense weapon -- depending on where you live).
A USP armorer can change the variant of controls to decocking, thumb safety, etc. You have several variations to choose from, including normal DA/SA and DAO. The USP also has an assessory rail to mount a light, essential in clearing a home in low light (not something I'd advocate if you're in a good defensive position).
The Sig will probably be more accurate under target shooting conditions, and probably needs to be cleaned regularly because of the tight tolerances. (You could go thousands of rounds without cleaning the USP.) The Sig will have a better trigger. The Sig is not a good choice for lefties. (The USP controls can be moved to the right side.)
You can figure out which design feels better to you in light of your anticipated use. After choosing the Sig or USP, you could compare the full size v. compact model to see if you sacrifice accuracy and control on multiple shots with the compact. If you don't sacrifice anything ....... I've found that many compacts balance better in my hand and are as easy to control for follow-ups ......... then I'd go with the compact. This would give you a concealed carry option, once you're trained and licensed.
Good luck!
Both of your finalists are great handguns. It probably depends more on your personal preference at this point than anything else. I know people who carry and who are satisfied with both. The Sig will probably give you better accuracy, while the HK would probably function under more adverse field conditions (not a concern for home defense weapon -- depending on where you live).
A USP armorer can change the variant of controls to decocking, thumb safety, etc. You have several variations to choose from, including normal DA/SA and DAO. The USP also has an assessory rail to mount a light, essential in clearing a home in low light (not something I'd advocate if you're in a good defensive position).
The Sig will probably be more accurate under target shooting conditions, and probably needs to be cleaned regularly because of the tight tolerances. (You could go thousands of rounds without cleaning the USP.) The Sig will have a better trigger. The Sig is not a good choice for lefties. (The USP controls can be moved to the right side.)
You can figure out which design feels better to you in light of your anticipated use. After choosing the Sig or USP, you could compare the full size v. compact model to see if you sacrifice accuracy and control on multiple shots with the compact. If you don't sacrifice anything ....... I've found that many compacts balance better in my hand and are as easy to control for follow-ups ......... then I'd go with the compact. This would give you a concealed carry option, once you're trained and licensed.
Good luck!