I beat Holy Grail today, after having meant to have done it for about 6 months...
Easy enough, the most challenging part would have been trying to lose against the Black Knight Titan (lvl 146). For a bit of fun I decided to throw everything I had against him. Paralyze, superhuman strength and incredible reflexes, along with full armour and a full set of pots. I don't think I hit anything below a 16, finished him off within about 10-15 seconds. When I finished, I suddenly remembered you're supposed to do the killing blow with excalibur

. He respawns, and attacks me. I have about 5 prayer left at this point, and haven't turned it off yet. That runs out very quickly, causing me to be able to take damage, and causing me to lose 15% to attack and strength. Despite this I completely 0wned him, albeit a bit slower (the 20's in the first fight helped a fair bit

). So basically I beat 2 lvl 146 monsters without running or healing inbetween... After this the quest continued on as normal, and for once I didn't stuff any of it up

. Delivered the holy grail, and got a whopping 11k prayer exp. I'd only just got it to 43 2 days ago, and now found myself within 20 experience of 45... So I killed a few chickens on my way out. Now I'll be 76 combat next time I level
anything combat-based.
Sorry for ranting so much, but I'm really happy about it... I can't wait to supercharge my prayer to 47 at monastery and see how long it'll last...