d24 tdm mix

[devils_advisor]

What is the difference between a d24 system and a tdm or mix system? Which one is better?

[Protools5LEGuy]

http://duc.avid.com/showthread.php?t=8222

I have a small fortune, ($7000 in Pro Tools III software, I/O cards, 888/16 and another $5000 in Power Tower Pro computer and external scsi drives) invested here.
You know it was 5 weeks after I bought my system that Pro Tools went 24 bit although I had no hint of it from the sales people or their reps. Well I guess some things are about money and I truly felt left out in the cold there. Well they're giving it to us again if you catch my drift.
This exchange adds insult to injury. I'm supposed to give them back the hardware which wasn't cheap and in return get a refurbished Pro Tools / 24 system which is also outdated and no longer listed. This system will not run the new features of the latest Pro Tools software which was their reason for having you upgrade in the first place. This makes no sense. The deal stinks and Pro Tools should feel an obligation to at least give the MIX core or farm.

It seems PT III < d24 (bits)< MIX(systems)

http://www.musicradar.com/tuition/tech/a-brief-history-of-pro-tools-452963

https://en.wikipedia.org/wiki/Pro_Tools#History

[Protools5LEGuy]

1991 – Pro Tools 1.0 – 4 voices, ProDECK and ProEDIT software, MIDI, and automation
1992 – Pro Tools 1.1 – support added for up to 4 cards/interfaces for 4–16 voices
1993 – Pro Tools 2.0 – merged ProDECK and ProEDIT into one application
1994 – Pro Tools III – 16–48 voices
1997 – Pro Tools | 24 – 24-bit audio, 32–64 voices
1997 – Pro Tools 4.0 – destructive editing, AudioSuite
1998 – Pro Tools | 24 MIX and MIXplus – 64 voices, expanded DSP abilities
1998 – ProControl – first dedicated control surface for Pro Tools
1999 – Pro Tools 5.0 – integrated MIDI sequencing
1999 – Digi 001 with Pro Tools LE (Limited Edition) – RTAS host-based processing
2000 – Pro Tools Free – 8 audio tracks, 48 midi tracks, RTAS support
2001 – Pro Tools 5.1 – TDM version adds surround mixing, Beat Detective,
2001 – Control 24 – control surface/interface with Focusrite preamps
2002 – Pro Tools | HD – 96 kHz and 192 kHz audio
2003 – Mbox and Digi 002
2003 – Pro Tools | HD Accel system – additional DSP abilities.