I have been running PPE gauges for a couple years and had no issues, pillar mounts are a dime a dozen, but there are differences, like the angle the pod projects the gauges at, how they "hang" from the pod, some hang straight down some orientate the gauges to face the driver more, I got mine from PPE as well, I think it's an autometer triple gauge pillar pod, but I like it. The only thing I don't like is, sometimes I will lean down to grab the hood latch release and bump my head on the lower gauge
Gauges are a personal preference, personally I didn't want mine to stand out all that much, so I got the ppe stuff cause they work and they aren't bright and blingy, and ppe has great customer service in case there is an issue. I know you said you are only looking for a boost and pyro gauge, but there are three main things to monitor, and one of them is fuel, it's not totally necessary and there are probably a bunch of guys that don't run one, but I really appreciate having a rail pressure gauge, just something to think about before you commit and spend the coin...