It kind'a depends on what you are looking for. There are several epoxies that will work, all should be considered high strength.
MAS, System-3, as well as several 5 minute epoxies. JB weld is fairly heat proof. Then the older grey goo (I forget the real name.)
Mostly, none will bond to Ultra High Molecular Density plastics, though. These require special surface treatments for only a medium bond, at best. Often keys can be formed that will lock in a part, even if it does not bond well.
Check out the various web sites to find out more about fillers and thickening agents. I usually use sawdust in my boats, metal grinding dust in metal stuff, allowing an hour or so of wait time...depends on what type of hardner you have.
Not really an expert, but I have been using epoxies for many years, off and on.