So I have actually gone down a similar path to yours and currently have an X-ray T4 18 and I just bought and put together the Sakura S64.
I bought the Xray used and it was in perfect condition so I feel I got a really good deal on it. The quality of the Xray is obviously much higher than the Sakura but I am still impressed with the kit and what it offers for being so inexpensive! Currently I have the Xray setup for USGT and the Sakura will be for VTA.
Also, this pretty much won’t be inexpensive if you need to buy everything like batteries/charger/tx etc…even though the base kit might be!