@ChrisNabil
Well, it's true that the price difference between the Kronos and the Nautlius is negligible at this time. For me, though, I'm wondering if I will be able to 'handle' the Kronos because I'm a pianist at heart and I'm a real novice when it comes to sequencers, creating arpeggiators, sounds, etc.
I just need something easy to use that will give me the sounds and arms I need. The Nautilus seems user friendly enough, but I've also been exploring other options.
Not really keen anymore on Kurzweil, they seem like good boards but as
@Biggles pointed out, it's very hard to find a store that has them in stock to try out, plus if there is no official support in your country, then that could prove to be a problem, too.
So, I'll be sticking to the better known brands.
As for my Kawais, I love my CA58 and. MP11SE just as much. My CA58 blends in nicely with my furniture but that's not a must, really. So still on the fence about which one I will keep.
Also been thinking about buying another board to complement my MP11SE (perhaps a Nautilus 61 might be an option), but then I started looking at the competition, equally priced but also cheaper options. It's a case of one devil and one angel on each of my shoulders. the devil saying to go for the best, the angel saying not to spend too much money and do I really need it, etc. etc.
Anyway, been looking at different options from Roland, Yamaha and Korg, from the most expensive (Fantom, Montage, Kronos and yes Nautilus as well), to the mid-range (FA, MODX, Krome EX), to the entry-level boards (Juno DS, MX, Kross 2).
Been watching loads of Youtube footage and it's really difficult to decide.
For the moment, though, the Nautilus still seems to be the best choice, but the Montage/MODX is starting to win me over (I'm mentioning the Montage because even though it's double the price of the MODX and you're not really getting that many more features, I could be persuaded to pay extra for the build quality and the keybed - playing the MP11SE makes one become quite spoiled...)
So, it's either keeping the CA58 and selling the MP11SE, and getting a new 88 key board to replace it, or selling the CA58 and getting a 61 or 73/76 key board to complement the MP11SE, basically 'spicing up' the latter.
Or still, when keeping the CA, I was thinking of getting one of those keyboard desks, but a really nice one, where I could integrate my iMac and Macbook, in order to have an all-in-one desk for work and music (production, ahem...). Just thinking out loud, options are open.