Yeah, as others have said, synth 1 is good. That is about the only 1 that I really use on my LMMS installation. It's an amazing VST and you can get so many sound banks and manipulate them. A wonderful VST. As others have mentioned, it's best to have a few and learn all about them.
i appreciate all your tuts. thank you for what you do. i have been away from lmms for nearly 5 years. so these tuts help old and new users