I just got to def level 61 and i want some better armour. Now i have dragon med helmet, granite body, legs and shield. I have about 2,25 mill to spend.
well, i suggest you get a neitz helm whenever you can, just do the quests. besides that, you have pretty much everything you can afford for 60 defense. Now get it to 70 and buy some much better barrows armor, it's well worth the costs if you like camping somewhere for cash.
I don't suggest Granite at all, specially the legs. Shield is alright, but I'd stay with rune plate and legs until you can afford barrows. And as Star said, Neitiznot Helm is your best friend head-wise.
Granite body=better than rune, and also cheaper.
If you want to upgrade that, get dragon platelegs (or skirt if you want to keep all of your money) and an obby shield.
Personally, I wouldn't really bother. :)