Hey Pep105, spot on mate. 

Preventative maintenance far better for the bank balance than leaving it too late.  I seem to recall in mind of that changing the belt on my Fiat Twin Cams (124 sport, 125 etc) every 25,000.  The cost for the belt back then $30-40 plus labour = cheap vrs an engine rebuild $2-3K (1990's costs). 

The other thing I forgot to mention about the JTS motor from what I have been told is that it is absolutely critical to make sure that the oil level is kept topped up.  Can do all sorts of damage to the variable valve timing gear if it gets low.  My engine feels and sounds extremely healthy, no tapping noises or anything just silky smooth and revs cleanly.  The way it should be.  Cheers Dave