Glad you are happy with yours but it is kind of early to tell if the G3 is a home run being so new with longer term reliability and durability not being established yet.
As far as paying more money for something else, that is an individual decision and depends on more than a few factors possibly including how many rounds a shooter puts through their pistols on a regular basis, parts availability from manufacturer, service reputation of manufacturer including turn around time, third party support, cost of accessories like magazines, and a long term favorable history of performance/ reliability/durability possibly including unbiased extensive testing like FBI, etc.
Personally I pay more without hesitation but it is good to have options at different price ranges for the consumer to choose from what works for their needs and desires including customer service support.
In terms of "mine" and G3, I don't own one yet and this is not the G3, it is the G3c, the successor to the G2c and was announced yesterday. I don't believe they are available for sale just yet.
So in terms of "Longer Term Reliability" it is a direct descendant of the G2 platform and the previous PT111 platform that has been around for nearly 20 years and is known to be very reliable. There may be some initial issues with a new update, but I would compare the G3c with that of say a Gen 5 Glock vs. Gen 4 Glock. It's an old platform, just a minor update and a platform that is known to be very reliable.
As for 3rd party support, one of the great enhancements on the G3c is the new sights. the new sights use the same dovetail and front site style as the Glock 19 and therefore have one of the largest aftermarket supports available.
As for mags, they are compatible with some Sig mags, canik mags, and I believe a few others, so tons of options if you don't go with OEM mags.
Support for holsters and triggers may be limited to start as it's a new model, we will see if it's compatible with previous G2c holsters.
I think the biggest drawback with Taurus is their poor reputation of customer service, although there are also some high end companies who have terrible customer service. There have been reports that Taurus has improved their customer service significantly in the last year or so, but I have no direct experience with it.
I realize some people will always be willing to pay more for their preferred brand, as is the case with anything, but the gap of benefits over additional cost is really closed with the G3c.
With this said, we will see what happens when they get to market, but I plan to pick one up as soon as I can after researching tons of different options in the sub-compact 9mm category. This would be a serious contender if it was the same price as it's competitors ($400-$600 range), but at under $300, it's a no brainer.
There's always risk with a new model update though as we saw with the Gen 4 Glock 19's (I had nothing but a headache with mine, issues with extractors, issues with recoil springs, etc. took them a good 1-2 years to work out all the issues with the Gen 4 Glock 19's) so we will see.