Honestly, I don't care what parts I put on my civic. Aside from the car itself and an axle, the most expensive part on my car was $30. Granted, there are a whole lot of $30 parts on it, but I built it from spare parts and aftermarket stuff. Works fine for me. Haven't had any problems with it either. The only part that's OEM on my car is the timing belt tensioner and pulley (for good reasons).

You can do fine with parts purchased from Auto-Zone, Advance, Pep Girlz, etc... but no aftermarket plug wires will last as long as OEM Honda wires from my experience. Doesn't matter if you do tune-ups regularly, but if you're the type that expects them to last forever, you'll be disappointed with aftermarket wires. OEM wires won't last forever, though... usually just last longer before needing to be replaced, but they usually cost 3x as much.

Edit: I've used standard NGK plugs in all of my imported cars and never had any hint of a problem. They've worked better than any plug I've ever used. I change plugs every 15k miles or (in the GSX's case) less. They're only like $6. Platinums are worthless to me. I'd rather change the cheap ones more often because no spark plug will ever increase your coil's output. New copper plugs work better than old platinums.