No offense to you, but I (and a lot of others) would have to disagree with you on the use of the 'quick solder' method. I am perfectly capable of installing an Xbox modchip using any installation method, but I stay away from this method because of the drawbacks.
Firstly, you are recommending this method to people who are inexperienced solderers. I see that you managed to get yours working without a problem, but this method can actually be quite dangerous for beginners. The problem is that if you're not an experienced solderer, then you won't necessarily know how to ensure a good, solid solder joint. So when you go and solder the 9 (or whatever) solder points, you're likely to get at least 1 or more joints that aren't making a good connection (probably on LPC point 2, 6, 9, or 12). The problem with the 'quick solder' method, is that once you've soldered a few of the points down, it's quite difficult to see which points are bad. And it's also very difficult to remove the chip to re-do the bad points. I (and probably most installers) have had to repair quite a few Xboxes due to people who have tried to solder in a 'quick solder' chip, and/or tried to desolder one.
Secondly, once the chip is in, you're pretty much locked to that chip. Desoldering one of these (without ripping up the motherboard) can be quite difficult for a novice.
In my opinion, the pin header is definitely the best method.
For those who have filled LPC holes, and don't want to desolder them (it can be quite difficult for novices), then a wire install is best. Preferably with some kind of removable wiring harness. I would recommend turning the included pin header into a wiring harness, so that the chip can be easily disconnected and replace with any other chip that uses a pin header.