I have been flying a Superstar (2, with retracts, there was at least 3 variations) for about 8 years, and competing in the modern world with it, it still wins contests. Marabu and Skyliner are on my 'to do' list. Marabu will fly a bit like a heavy Taurus, Skyliner like an Orion. Which is complimentary, by the way. Equalisers' designer (Stu Foster) is still around, still flying I believe and living in jolly old England. It will be quick. Stu took one to the ('69?) world champs. It is a Thunderstormer (Spreng) variation. The Thunderstormer plans are still available too, and another one you should consider.
Evan.