Only quite recently have been playing proper one to one battles with people. Over the years I have gone to GW trainning sections and played there, against staff and people, but never in anything big.
The other say I challanged a friend of mine to a warhammer 40k battle. I would be using an Ultramaine 1170 point army, and him, a 1190 Dark Vengeance army. He would be using both the armies chaos and dark angles (however he forgot his captain and Librarien). This battle was very entertaining and after about 3 hours, I managed to seal a Victory for the 4th.
I would be using: