Re: spermicidal condoms
Spermicidal condoms work just like any other condom, with one exception. The spermicide kills the sperm on contact, so if it does tear, even slightly the spermicide will help to kill sperm before they "swim away". So, yes, they are "better", but there are also personal prefrences to consider.
It doesnt ruin the condom, if you buy ones already spermicidally lubricated. If you dont, youll want to know if the spermicide is water-based or oil-based, or if it will affect the condom, if you dont buy the already lubricated ones.
Good Luck and Be Safe