QiYi have now released a tournament display which is significantly cheaper than the speedstacks display used in official competitions, it functions pretty much exactly the same and seems easy to use so is definitely worth getting if you are looking to mimic the competition experience.
Other Posts

Daniel Partridge smashes UK 7x7 national records
Earlier today, at Stevenage October, the UK speedcubing community was surprised with the very fast 7x7 solves achieved...

9 Year old Teodor Zajder almost beats Tymon Kolasinski's european record
At the end of September, at a competition in Poland, Teodor Zajder achieved an average of 4.69 seconds,...

Max Park breaks 6x6 and 7x7 world record average
Last Sunday we awoke to news that Max Park had once more broken the 6x6 world record average,...