I use Tattu all the time, and many of my friends use this brand of battery. Of course, because it has many advantages.
high-safety, high rate battery, high-energy density, high cycle life, the high- and low-temperature performance of drones power lithium-ion batteries, design and manufacture reliable renewable battery energy storage systems, power systems, and is the leading drones power lithium-ion battery supplier.
That sounds like a promo message you’ve just posted! 
However - Tattu R-line are my goto battery, so I’m with you on the promotional stuff. Now can I get a free batter for agreeing? 
I like Ovonic lipo battery, especially its’ OVONIC 1300mAh 4S, 100C for FPV, this can be a great alternative to the r line pack.
I like DEFNOCO, I used their semi-solid state battery which power is strong with long lifespan.
Absolutely, Tattu has been the industry standard for a long time now!
Their latest R-Line Version 5.0 (V5) packs are incredible—the voltage sag under heavy throttle punch-outs is almost non-existent compared to older gens. Also seeing a lot of pilots switch to their High Voltage (LiHV) 4.35V packs for racing because of that extra top-end pop and lighter weight-to-power ratio. Definitely worth checking out their newer 1200mAh/1400mAh 150C V5s if you haven’t tried them yet!
