Get MX blue. Clicky is better because you won't accidentally miss the button press. I use Blues for doto gaming at home.

Black is for heavy handed people who wants to play FPS. I'm getting one for testing purpose anyway.

Price range should be below RM 300, you can get a cheap Rosewill (costar stabs FTW).

Then slowly poison to the next level.

<<often mistype>>
You may choose choices below. Of course, it will not mistype-proof when you use mkb. The switches will let you know immediately if you mistype.
MX Brown, MX Clear<-- Tactile feedback, you may know immediately if you mistype
MX Blue, MX Green <-- Tactile feedback + clicky sound

<<Like the clicky sound>>
MX Blue or MX Green

<<what colour switch is suitable for me>>
MX Blue or MX Green

<<What brand>>,  <<Price range (prefer cheaper range/best bang for bucks)>>
Rosewill, Filco, Ducky, CM Storm, see first page (included price range also there)

Blues not good for FPS. Browns maybe okok.

FPS and Doto use different keyboard. Doto prefers clicky and precision, while FPS is mostly about twitchy reactions, so linear switches are best here.

Multitapping a switch... I think linear is better. I haven't tried any linear switches yet, so gonna wait 2-3 weeks for my banggood keyboard. After conversion and calculations, pretty much same price as getting from taobao.
Blues will help a lot with that, or getting blacks will. In the end, depends on whether you doto more or FPS more. Doto is blues, FPS is blacks for your case.

I heard typing with blacks is high fatigue, but I haven't tried personally.

Linear MX Cherry Switches (Red, Black)
- Linear switches have the simplest operation, moving straight up and down without any additional tactile feedback or loud clicking noise.


Tactile MX Cherry Switches (Brown, Clear, Blue, Green)
Tactile - As you press the key down, there is a noticeable bump which lets you know that your key press has been registered.


If you looks carefully in the Tactile MX Cherry Switches pictures above, you will notice the copper slider will move twice.
Simple explanation is, you press down the key to registering point, the key let you know you already pressed him by some bump feedback. 

<<But would MX Blue or Green, somehow effective in reducing double clicking error/mistype?>>
By experience, somehow it will helps. But, the real problem lies on your typing method or habits.

You should try for yourself which you like.

its really hard to decide just based on recommendations. i'd suggest u to take a free afternoon n visit Heavyarm in SS15 for 2 hours n test on their keyboards. they have blue, brown, red, black keyboards. test until u really confirm which switch is more suitable for u.