I planed to build my 5 inch freestyle (maybe using Armattan frame) Which one is better? In my country it same price. Any one try both of them? 45A ESC enough for those motor?

t-motor would be my choice, i believe in t-motors quality and their reputation as premium manufacturer seems a long time. t-motor suggests a 45a rated esc for all kv variations, a solid 45a esc should be fine.
i wouldnt buy tmotor f10 or f15 but anything else.

What specific motor are you buying? The cyber comes on 2207 and 2306 and all kind of kv. While the T-motor are 2207. One review suggested that the 2550kv F60 isn't quite as good as the F40. While the 1750kv F60 beat the thruat published.

At the end of the day, you will be hard pressed to tell the difference. Both are great motors. You can't go wrong either way.

Around 2500kv because I have some 1550mah 4S, don’t think I will go for 6s because I have to buy battery. Don’t know the size of T-motor, they don’t show it. But I prefer 2306 for smooth at low throttle, power efficiency and better temperature.

Tmotor maybe the good choice sine many people using it, I don’t see lot of Cyber Xing out there, the reason I’m asking because they have big ball bearings make it strong and unibell design look strong compared to F60 with 2 pieces bell

t-motor is known as very durable, saw that several times in parkhouse. unibell doesnt tell all about durability.
some f40 would be 2306 size

Have a little read if you want to go with 2550kv F60

http://dronehitech.com/en/t-motor-f60-pr...rust-test/

Gal Kremer also did some thrust testing on each of the 3 different KV T-Motor F60 Pro IV motors...

T-Motor all. day. long. Zero comparison.

I have the 1950KV IV's on an Apex running 6S. Gravity no longer exists lol.

Using Spedix slim 40A individual ESCs and no issues at all handling them.

Thanks for all of helpful informations you guys gave me.