MK9 Elite 18 vs Elite 03 (M9098)

[Perk]

Hi all,

Is the only difference between the MK9 Elite 18 and Elite 03 the front checkering on frame grip? That's the only difference I can find, besides of course the laser etching on the slides being 18 and 03 respectively.

[rx7sig]

There is an Elite 98, too. Can someone describe the difference between these three types (03, 98, and 18) of "Elite" models?

TIA,
rx7sig