Neo 4, bad but how bad?

[clumzy]

I'm new to the PS2 chip scene so I've been hearing alot of talk of the Messiah and the upcoming release of the Messiah LE.

However, when I looked at this Canadian Chip seller they sell the Neo 4 and Neo 4 Plus. I hear they're bad but why? And how bad is bad? If your system is compatible is this comparible to the Messiah?
http://www.modchip.ca/html/uschip4plus.html

PRODUCT DETAILS

Play PSX Original Imports - No disc swapping necessary
Play PSX Silvers* - No disc swapping necessary
Play PSX CDR Backups - No disc swapping necessary
Play PS2 CD Silvers* - No disc swapping necessary
Play PS2 CDR Backups - No disc swapping necessary
Play PS2 DVD-R Backups - Using single swap with an original DVD based game (this is inconvenient)
(no swap upgrade using origia chip upgrade available soon)
Play PS2 DVD Silvers* - Using single swap with an original DVD based game



I dug this up from a FAQ somewhere:

NEO4 - The first noswap CDR mod out. The Neo4 will boot PS2 CDR with no swap. PS2 DVDRs still require one swap, which does NOT require a GS2/AR2. The Neo4 can be used in combination with the Origa for no-swap everything. This mod requires 44 wires to be soldered to the motherboard for 100% functionality.

NEO4.1 - Updated verion of Neo4. The Neo4.1 supports more consoles, has the latest DVD drivers and faster boot than the Neo4, that is the only differences. This mod requires 44 wires to be soldered to the motherboard for 100% functionality.

Is the chip above the Neo4.1? It says that only 9 wires are required to be soldered, but the FAQ says 44.

Any information would be helpful.