steelseries arctis 7

Hi, i lost my arctis 7p plus transmitter and now im looking to buy its replacement but steelseries website shows out of stock and i found some on aliexpress but the part number of those are "HS33TXB" but ive seen some unboxing videos of 7p plus on youtube and the part number shown is "HS33TXQ"...

So i am confused which headset to buy , i was previously using the steel series siberia v2 Navi edition which i loved and they worked well for around 7 years, now my friend is saying hyper x is better than steel series so i am confused ,also is there any difference betwen Cloud alpha and Cloud...