To get a strong pluck sound, it is great to find a synth that allows you to customize the attack shape. Usually the more convex the attack the more plucky the sound is. If you have a synth where you can not set the attack shape, you can still use the so-called recursive modulation to shape the attack of the amplifier and the filter.
Here is a video and text tutorial about it:
10 Tricks for Access Virus and search for "Recursive modulation" on the page.. it works with most software synth, e.g. with NI Massive.