I think they're great, I've had mine for 7 years and apart from a cam belt breaking, its never given me any problems..
The cam belts need doing every 60,000 kms by the way. (oh wait, did you mean 35,000 miles?)
All engines have their issues - I would say that the JTS can get coked up a lot, its best to use 98RON fuel and as you say, check the oil every week and make sure you run 10w60 full synth..
The other problem with them is that the crank is very soft, so never run the oil low.. never skip a service. Never yell at her.. she's sensitive.
Give it a good run every now and then to burn off any water and fuel in the oil if you do mainly short trips.. but when you do go on a long fast run - check the oil!! it will drop fast.
Otherwise, don't fang it when its cold - give that thick oil a chance to warm up and thin out before you put the foot down... should take about 15v mins and make sure you service it regularly...
I've upgraded my suspension and replaced anything that had a hint of being worn out and I have to say, she drives like new and she's lovely..
Oh - and the fuel consumption is excellent.. i get about 800kms to a tank. Compared to the GTA it's more like a prius! maybe not a good comparison...
Edit: reading my reply it sounds like its a full time job cuddling this car.. its not.. all you need to do is respect it, treat it kindly.... if you want to thrash it, warm it up first.. otherwise for me its been trouble and hassle free.