I have an LDG 1000Pro, I’ve never had any problems with it and it does a good job. The only downside is its noisy when tuning a frequency not in memory but that’s not a show stopper. At all costs go with the AL-80B I’m sure you will never regret it. The 811 series was designed to be the cheapest possible amplifier and that’s no secret. I’ve never had any issues with my 811 however I only run it at about 400 watts. Running it at the rated output is pushing it to the absolute maximum for both the tubes and power supply, at the first opportunity I’m selling or trading in my 811 for an AL-80B.