I may just be echoing everyone else here, but yeah... Trojan Magnum XLs have worked the best for me thus far. When I was young and naive, I kept trying the regular condoms. I started off with the standard Trojans and Lifestyles, or whatever I could get ahold of at the time. I honestly didn't know that I was above average (despite my ex-girlfriend's comments... I just thought she was being nice). I soon realized, however, that condoms are not supposed to break just by putting them on. (Nothing quite as unpleasant as having them snap the wrong way and flick you on the cockhead like a rubber band.) I first tried upgrading to the Magnums, but found that they were still a bit snug. I could get them on without breaking them, but they would pinch a bit and strangle my cock, making the veins bulge out obscenely. (My girlfriend at the time said that it made my penis look "angry.") The Magnum XLs ended up being the right size for me. Judging by our similar sizes, I would venture to guess that they would work well for you.

Now as far as price goes, that just depends on where you live. Try to stay away from run-of-the-mill grocery or pharmacy stores as they tend overprice them at around $10-$15 American for a box of 12. Even porno shops usually overprice them. As much as I hate supporting evil, I've found that WalMart has the best deals on the XLs around my neck of the woods at around $5-$7 for the 12-pack. Outside of that, I would recommend shopping around the usual online spots. I've seen a few good deals on Ebay and Half.com, but you usually have to buy in bulk for the shipping to be economical.

Hopefully my information is helpful, and good luck!

Cheers,
~LPD