Personally I don't like zip ties and sticky mounts. Cable clamps are cleaner IMO and reusable.
I paid $2.50 per pack at my local hardware store (got one pack of 1/2" and 3/8" diameter clamps). I have plenty extra.
Actually the best combination would be a lot of cable clamps and then just a few sticky mounts. Probably 2-3. The sticky mounts are there for the areas wherein a cable clamp cannot screw into the M/B holes that aren't empty.
I'll post a shot of how I did mine soon. It's not the best, but using these things really prevent the side panel from bulging with the cables.