Neither the Model M nor the AEK II is a “pinnacle” of anything. The best keyboards were made earlier, in the 1970s. By the mid-1980s when the Model M debuted, or the early–mid 1990s of the AEK II, keyboards were already started along their downward cost-and-quality-cutting slide, albeit not yet to the final rubber dome ditch of the late 1990s through 2000s.
If you can, try to find an Apple Standard Keyboard (M0116) or Apple Extended Keyboard (M0115), with orange-slider Alps switches. Try to find one in as close to unused condition as you can (ideally you want something which was stored inside a box for 25 years), as getting dust inside the mechanism affects the typing feel of Alps switches dramatically. If you can, also try to find some blue-slider (clicky) Alps switches from the same time period (late 80s through about 1990).
Most keyboard “enthusiasts” agree that these are nicer keyswitches than the AEK II’s cream-slider Alps switches. The later switches were after some cost cutting design changes at Alps (and maybe production expansions to new factories?). And also have their feel somewhat compromised by the inclusion of rubber dampers in the switch which were added to cut some of the sound.
Also, instead of a Model M, see if you can find a Model F. They’re in my opinion much more satisfying to type on, albeit a bit louder.
Other clicky switches you might try are blue SMK switches, black NMB–Hi Tek switches, and IBM beam spring switches.