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Unfortunately, there is no easy way - the upper intake (surge tank) has to come off in order to access the plug wires and plugs.
Once this is off, then remove ignition coils and spark plug wires. At that point, you can access and remove the spark plugs:
INSTALLATION OF SPARK PLUG CABLE
The bottom portion of your qustion just showed up on my side.
Yes, you want to use the better spark plugs available. Also, Because of what is involved to replace the plugs and wires, it is a good idea to go ahead and replace the wires while you have the upper intake off.
The yellow highlighted are where bolts are located:
2003 Jetta left rear window blue plastic part of the