STI service trucks

does anyone here have one or been around them? Specifically a newer Dodge chassis with full PTO crane and compressor.

Currently in a Maintainer and weighing ordering an STI or another Maintainer.

I like the Maintainer because it's lighter than any of the others and the stowed height on the crane is much lower as well. They may use one of the loudest pto pumps known to man though. I'm wondering if the STI is any better in that regard. They use a tandem pump.

STI service trucks