I get caught up in using my modern aggressive razors so much that I forget about my other highly-aggressive razor: my Gillette "Old". It's more aggressive, in my opinion, than any modern razor other than the R41. It's small and light, so you need to be careful - it can bite (and irritate). I gave myself a BBS this morning with a Feather blade, although I got a bit of irritation as well. If you haven't tried a Gillette "Old", you can pick up a good one easily and fairly cheaply. If you have run through all of the modern aggressive razors and want to try something different, give it a try.