The MA1 series are definitely great pistols. I had some trouble with my mags about 2 months after getting mine and Steyr replaced them in about a week. I also jacked my barrel up (pretty much completely my fault) and Steyr replaced it with just about no questions asked. The customer service is by far and away the best I have had experience with. Regarding service, you should have absolutely *zero* concerns.
My M9A1 was a little finicky out of the box, but after swapping the mags out and putting somewhere around 500 rounds through her, the feeding problems completely vanished. I'm happy to say the pistol has been 100% for about 3000 rounds now.
The trigger is great, period. Ergonomics either work like none other for you or they don't - it seems you were pleased with the way it fit your hand. The sights can take some getting used to - I was not able to overcome that part, so I replaced them with night sights.
The gun is as rock solid as they come in just about any price range - absolutely on par with my Sig and HK. Disassembly is a breeze and the finish is every bit as durable as a glock, etc.
My only complaint stems from my cautious nature - I wish the A1's had a manual safety. The pistol is 100% safe as long as I do my part, but I still prefer a manual safety.
You definitely will not be sorry if you go with the MA1 - exceptional pistols at an exceptional price. Check out SteyrClub.com if you want some more info.