Power Pistol is currently my favourite choice in 10 mm. People can argue about high power, low power, and mid range loads. With load data from Alliant, I can launch 180 grain bullets at 1240 FPS with Power Pistol.
This is warm enough for me. You may not consider this a high power load. It is as hot as I want to subject my Delta Elite to on a regular basis. Yes, 800x may reach higher velocities at a safe pressure. I am more worried about the slide velocity beating up my pistol. I know all about extra strength springs, shock buffs, and small radius firing pin stops. Power Pistol provides all of the velocity that I could ever want from a 10mm, and does so at a reasonable level of pressure.
800X does sound like it might be worth experimenting with in my 610, though!
