Year One's harnesses are a different animal from Painless's. A Year One harness is a duplicate of the factory wiring with the same connectors and everything. The Painless wiring kits are simply pre labeled wire with a couple generic connectors, some splice connectors, and what looks like an OEM late model fuse / relay module. So it would be more work to install and you'll often need to reuse the connectors from your harnesses. There are a couple other shops that sell kits like Painless's, and it is something you could piece together on your own with some research (other than the custom labeling, which is a bit hard to find economically in small runs).
One other note: Some of the kits do cut corners in quality. TXL or GXL wiring is high temperature stuff for engine compartment use; there are some parts out there that skimp and use cheaper general purpose wiring rated for lower temperatures. Most of the wiring spools you see at parts stores are the cheap stuff.
