Try an MI Audio Blues Pro pedal. Similar to a TS9 / 808 but with more range on all controls. Inexpensive and made very well.
Try Wampler's Pinnacle and maybe the Plextortion. Another, if you can find it, is Marshall's Drive Master pedal, the original black box version. This is a very good pedal. All these pedals can give you the palm mute stuff. It's all in the Level and Gain controls.
If you use a TS type pedal with only a tone control, you might consider placing an EQ after it. This can do wonders for your tone. An EQ in the loop helps, too.
Another TS type pedal is Homebrew's Power Screamer. Also for consideration is CMATMODS Brownie; similar to Wampler's Pinnacle.
I have all these pedals but haven't used some of them in quite some time. The Marshall Drive Master, the Pinnacle, the Plextortion I really like. The Brownie and Power Screamer I can't remember what they were like. The MI Audio is a very good pedal, no question. I also EQ in front and in the loop so this plays a part, too.
I can only suggest to try them with your rig. I can't record samples because alot of my gear is packed away and difficult to get too. Sorry.
Check youtube to see what interests you.