Logisys vs Eluminx

So what 's the difference between the Eluminx and this Logisys keyboard?  Well, the Eluminx has the condensed layout similar to that of a laptop keyboard, but adding the numeric keypad to the side.  Also, earlier Eluminx keyboards have their three LOCK indicators as green LEDs, quite a contrast if the chosen illumination was the "Sapphire", or blue color.  Its interface comes in PS/2 only. 

More important to note are the keys and their illumination.  The Eluminx keys are somewhat a translucent crystal-like character, and they make a solid "tick" sound when pressed, provided the unit is on a solid surface where its two rubber feet can grip on to.  Its illumination turns off after a period of inactivity, and the color is more subtle than shown in the photo.

The Logisys keyboard has a full standard keyboard layout, including the middle cluster, as shown below.  Also, their LOCK indicator LEDs are BLUE LEDs, perfectly matching the EL illumination.  This Logisys is natively USB, but has a USB to PS/2 adapter.  Also, it has the EL on/off button, macro buttons, and flip out support legs that raise the rear of the keyboard to provide more inclination to the user.

The Logisys keys are milky-white, and create a more hollow, and less solid "tack" sound than the Eluminx.  Its illumination is a bit brighter, however I prefer the larger backspace key of the Eluminx. 

One issue found on both keyboards is high frequency noise from the inverter being picked up by various devices when placed close by, or held whilst typing.  For example, typing on either keyboard while holding a phone to one's ear gives you a not-so-pleasant yet subdued buzzing sound.  The Logisys earns points here for having an on/off button for the EL.