I have just bought the 25th Aniv. version and already have a 74 (both fully tuned). I cant really tell which is better because they're much different (considering they're the same model). The 88' is at 651hp fully tuned, while the 74' is at 514, but the 74' weighs 905kg and the 88' 1241kg. Anyway, from racing both, I enjoy the 74' more because it lighter and handles muchh better, but on most tracks (except the very curvy courses), the 88' gets better lap times, but usually only by 1 to 3 secs. Bottom line: Its personal preference and driving style. 95% of the time, one wont win a race the other wouldn't.