Hi there guys. 55 plate 1.9 Tid 120 8v. Next on my list is to replace the thermostat as it is taking a long time to warm up. In fact I've only seen the gauge hit 1/2 a couple of times. So my question is are the aftermarket ones like the Gates one any good or am I better off paying a little more fro a genuine Vaux one. On other vehicles I've owned I have always gone for the OE as they were separate stats and fitted better and worked for longer! But these are whole housings so the fit should be ok but is the quality. I know Gates are trusted esp in the US as far as belts are concerned but t stats???? What do you guys think? experience? Thanks