Just thought I'd write this little thread up because a lot of ppl have asked me this, so here it goes.
What is Slayers?
Slayers was one of the first (if not he first) proper installer disc system written for Xbox, consisting of EvoX as it's interface and main dashboard of installation, plus it included a few other small apps (like Avalaunch and Xbox Media Player/Center).
Up until around September 2004 it seemed like the best and most popular way of setting up your Xbox. But unfortunately, after this time it was no longer supported development-wise, and has severly grown outdated because of this.
EDIT: I'd just like to mention that a newer version did come out in October '06, however there was not many changes made except for the inclusion of XBMC).
What is Auto-Installer Deluxe?
Auto-Installer Deluxe was originally released back in December 2004 (version 1.0). The original idea was sparked by X-Disk, which supported multiple dashboard installs. It had a similar idea to Slayers, but instead took a more broad look at what was available software-wise at the time. It allows you to install one of many different Dashboards, and has countless Applications and Emulators to choose from. Now it's currently up to version 3.0, and in that time was grown bigger, and more flexible than any other installer available.
Pros and Cons about Slayers
Pro: Was the innovator of all most installer-disc systems today
Pro: Up to version 2.6 it remained current with vital things (MS Dash etc)
Pro: Fits on a 650mb CD-RW with no problems
Con: Outdated installer system, doesn't have many options
Con: Only 2 Dashboards to install
Con: Hardly any apps, ones exsisting seriously outdated
Con: Supports modchip installs primarily, not real support for Softmods
Pros and Cons about Auto-Installer Deluxe
Pro: Most up-to-date installer there is today
Pro: Lots of Dashboards, Applications, and Emulators to choose from
Pro: Supports BOTH Modchip and Softmod installs
Pro: Kept up-to-date with update packs, released every couple of months
Pro: Plenty of options to choose from
Pro: Standard Core package fits on a 650mb CD-RW
Con: Full package requires a DVD because it goes over 650mb
I've tried to be as honest as I can, if anyone would like to comment on this please do...