Yamaha DTXpress/DTXplorer/DTXtreme

I need some feedback here.

I bought the dtxpress to fill out my home recording
studio - but still have issues. I'm trying to record
real time midi drums, real guitar, real bass, to hard disk.

Is anyone in the group using audio/midi software on a PC?
I'm trying to find out what's works best, what quirks, etc.

system:
AMD k6-2 400
96 meg pc100 ram
2 20-gig udma 66 ide drives
Amptron PM-585 MB
Creative Ensoniq Audio PCI

note: I have read many reports that much software that
relies on Direct X only works well with Genuine INTEL
chipsets/processors,
so ultimately I may have to get another system.

So far I've tested a few.

NTRACK STUDIO: 
pros:
I can get 26 mono 44k tracks without effects.
cost $35 bucks
cons:
Crashes under many configurations, most stable on NT.
Midi support is unstable - drops notes - difficult to edit.
Heavy crashes under windows 98 first edition.
Support only answers questions they know the answer to.

Quartz Audio Master 2000:
pros:
Extremely stable under win98,NT.
Musician friendly interface ( looks and acts like a traditional studio )
cons:
Sometimes can be a resource hog when many audio tracks exists.
I can get about 12 mono tracks before latency occurs.

Cake Walk:
pros:
it's popular?
cons:
I couldn't get it to stay running more than
5 minutes on many different configurations.
( haven't tested on NT )