Looking at some struts right now...

I'm seeing two big companies for options... Either "Tokico" or "KYB"

Looks like I have four basic options:
1) TOKICO HP STRUTS / SHOCKS - $300
2) TOKICO ILLUMINA STRUTS / SHOCKS - $420
3) KYB GR-2 STRUTS / SHOCKS - $230
4) KYB AGX ADJUSTABLE STRUTS/SHOCKS - $430


The illumina's are "5-way adjustable" but the HP are not...
I assume it's the same story when you compare the GR-2's to the AGX...

Any reason why I should pick one company over the other? Tokico vs. KYB?

Also, I have a good idea what "adjustable" means, but could someone explain it, and tell me which ones I should go with, and why I would want/need adjustable ones, rather than the cheapo's...