Dunno about the logbook crash, never experienced it.
There are plenty of excellent add-on's, what are you looking for in particular? There are a lot of scenery for South Africa, most from Aeroworx and Trieng-Trieng. However, the Aeroworx scenery do cause heavy frame drops, I tried to contact them but their support is not happening. Payware scenery is provided by NMG Trading, with most major airports covered. The sad part is that using the different scenery's leads to weird glitches in the scenery.
In terms of aircraft, there are a lot available, however the one particular aircraft that I feel was done right is the Lotus L-39C Albatros. Its a bit pricey, but its one of the best aircraft ever developed for FSX. One of the biggest drawbacks of MS FS was the fact that the fighter aircraft just don't feel right, however, the L-39C from Lotus feels 100% correct, the performance is very true to real life and the model looks brilliant. I can fully recommend it if you like that type of aircraft.
Another recommendation is the Lionheart Quest Kodiak, not so expensive but a brilliant aircraft.