Cubase Pro Tools, time to switch?

I’m a Cubase sx 2 user and I have a Tascam FW 1884.
PC: P4 3.2ghrz 1.2 giog or ram (corsaire), hdd ultra atra 7200rpm 160gig HD2, external usb 2 western digital 260 gig (for audio track)
I’m tired of Cubase crashing (since my 2 last pcs) I know it’s not the PC because It’s brand new. maybe it’s the Tascam anyways, I’m thinking about lossing the FW 1884 and Cubase sx2 to get a Digidesign 002R with a Tascam u2400 controler. what do you guys think? any better suggestions? The only thing that bother me is the limited amount of track in Pro Tools LE.
if you think of better gear let me know.
My studio:
AKG c414, Avalon 737sp, ns10s, event 20/20 bas, TC helicon quintet, MoPhatt rack, Motif 6, mpc 2000XL, Genelec sub 1091.
Thanks 😀