says who? Tag isn't an established maker?
Huere was a very established watch maker for a number of years, they have just as much history as omega and rolex, a history of over a 100 years if you care to go browse their site... They've been making automatic watches for a very long time.
I have a 6000 automatic chronometer, i also have a 1567 rolex GMT Master.
I also have a 6000 kirium quartz. The 6000 keeps much better time then the roley, it's also about 26 years newer...
The 6000 has a very smooth and accurate movement which sweeps comapred to the quartz which jumps by the second. The watch can last 3 days unworn just the same as when i bought it over 5 years ago. It's been very reliable, and hasn't even had the movement serviced yet. The watch is also a certified chronometer.That means it's thoroughly tested and certified time piece by the swiss time officals. It's tested the same as rolexes, and omegas and has similar tolerance capacity. Tag does not make any automatics that aren't chronometers. The automatics are never as accurate as a quartz which has been noted above, yet you need to remember the swiss automatic movements are amongst the best there is in the world. Rolex in general is more exclusive because they cost a bit more money. Tag Huere is a great value and deal similar to omega when compared to Rolex watches of similar variety... Although your friend might collect watches, i doubt he would go and say tag isn't an established watch maker. They also happen to make arguably the best bracelets and deployment clasps. Rolex hasn't changed their designs in years, you will know an authentic rolex when you can feel how lousy their clasps are (especially when you drop 8 grand on a watch you can still get that luxury).
If your interested in some of Tag's newer automatic movements, just go and checkout the automatic monacos belt driven system, it's the only of it's kind and it's pretty awesome.