So Update: (After a long time)
Now I own 2 Keychrons (don't ask me why)
First is C1.
Which is an entry level MKB with white backlight. Wired. With Gateron Brown switches. Build is plastic and layout is TKL. Suits most of my needs and I feel really comfortable. Since there is no numpad, lot of space for mouse movements. Do I miss numpad? Occasionally. But since I'm not a gamer. I don't have any issue on that.
Bought in Jan, 2022 for 17,000 LKR from Amazon Keychron Store via Kapruka. Delivery time close to 1 month.
K6
I needed a wireless one after using C1 for a long time for portability. I take my laptop outstation hence I needed an on-the-go MKB. Found from a FB group this one. Used for few months by the previous user and in almost brand new condition. This is more compact compared to C1 but it's OK for me since I'm looking for more portability. Frame is metal and heavier than the C1. Build quality is also little bit good.
Bought it in April for 20K used. Gateron brown switches. Can be used in Wired and Wireless mode. It took some time to get used to as it doesn't have a function row and missing some other keys. You need to use f1 and f2 keys with some other keys to replicate missing key functions.
Both are Hot swappable,
In day-to-day use, I prefer C1 because of the TKL layout. TBH, I don't see any huge difference in both when typing. But if I engage more in typing, I use C1 and normal day-to-day stuff, K6 is also fine.
For me. Once you go MK, you cannot switch back to normal KB.