First I have to ask how many different blades you've tried. The blades are what cut the whiskers, and they do vary in sharpness. Different bezels on the blades make a difference, too. One blade might feel sharp to one person and dull to another just based on what's going on with all the angles.
The Edwin Jagger is a medium razor so most people wouldn't have trouble with it clogging, etc. I would say anything more aggressive than that comes down to personal preference, and not efficacy. But, that's just me, and obviously you aren't most people.
So, if blades have already been explored or you don't care and just want something more aggressive, I can recommend the following:
- Merkur Futur
- Vintage Gillette adjustable like the Slim Adjustable, Fat Boy, or Super Adjustable. On the higher settings they're quite aggressive.
- Vintage GEM Micromatic Open Comb (MMOC). A single edge razor which limits blade choices. Most agree the best blade is Personna GEM PTFE.
- Chiseled Face Legacy. More expensive but built really well and made of solid machines metal. It doesn't feel aggressive, but it has a really large blade gap and is very efficient. Some people say riding the cap is the best way to go, but there's a wide range of angles that work.
- RazoRock Game Changer .84. More affordable than the Chiseled Face because it's mass produced, but still solid metal.
The list goes on, but that's a good start. Good luck!