Moon,
It just does not seem fair to ever say that Korg is better or worse than the Alesis,or vice versa.
Although Korg is notorious for manufacturing exceptional,user-friendly workstations & authentic & reasonably organic sound samples,it's not without it's flaws.
The Korg Triton Extreme's ability to manipulate program presets to create unique user sounds is very limited-it's more of a plug & play keyboard.
Buying new pcm data for additional preset programs is not only expensive,but the library is very limited.
However though,from everything I have read,people I've spoken with & personally purusing the keyboard in a store,the Korg Oasys may very well be the only keyboard you would ever need-not only because it is the most self contained,all-in-one studio,but it also has unlimited potential to create the most unique user creations,and I don't ever see the Oasys becoming obsolete,as it is the most versatile keyboard on the market to date.
All that being said of the Oasys,well of course,there is no comparing quality & standards with a price tag of $8,500.
The Fusion's exceptional quality-as far as I can ascertain at this point,is that like the Oasys,it is just as unique of a keyboard,because there is nothing else like it on the market.
The Fusion also has a feature that no other keyboard out there has(not even the Oasys),which is the ability to store all of your information directly to the hard drive within the keyboard and recall it at your disposal.
One could say however,that that Korg products have some authentic real world sounds that Alesis does not have,nor may ever have,but then Korg will never have
32 tracks of sequencing,massive-internal hard drive storge,unlimited sound library,the most vast sound shaping synthesis & an integrated midi sequencer/audio recorder function for a mere $1,000.
Point in fact overall,is that the Fusion is not just about it being a bargain and it's not about the Fusion measuring up to stand toe-to-toe with Korg-it's that both keyboards are offering high quality standards in different ways.
What one lacks in one area,it makes up for it in another.
I know this sounds unsubstantiated coming from me & to some degree it would have to be,being that I have yet to own a Fusion,but I know this keyboard better than any product I've researched,because of how closely I've followed this product by virtually reading all the articles,reviews,user feedback,videos,tutorials & demo samples that I could find-along with keeping abreast of all the latest updates of the Fusion.
It is this very type of research that lead me to purchasing my Adam A7 active studio monitors.
I did all the research & became intimately familiar with the Adam A7 monitors,without ever having heard or seen them & they turned out to be the most significant purchase I had ever made.
Once I purchase the Fusion & explore it,I will validate and elaborate on the Fusion and I will be happy to share my experiences with it,so I will most certainly keep you posted.