Mean Well is a good company because of the quality control. Quality control is Aixun's weakness. The power supply in the T3A is perfectly adequate, if all goes well. Some questionable soldering in some units, as well as a screw floating around inside, a couple of cracked inductors, and cheap Chinese electrolytics are the (potential) issues. Clean up anything that needs it, look out for bad solder joints, and replace the electrolytics within the first 6 months or so (depending on its workload), and the quality control problem is solved. Eltax did a load test FLIR image posted on page 13, 24v/6a, and it failed after 2 hours. The smaller heat sink and the mosfet attached to it got the hottest, and was probably the first thing to fail. That's an unrealistic situation the put the unit in. Replace the power supply if you want to, but no one has reported any failures so far, and some are used in production work. Q3 on the control board was the only other potential issue. If it goes bad, the tip will burn out. There was some talk about using something beefier, but it really hasn't been an issue either. Improve whatever you want to, but the general consensus seems to be it's a great unit that may need a little attention.