Diki easier said then done....

there are many levels of knowledge here regarding arranger keyboards NO ONE knows it all.....some are experts in playing, others aren't that good of a player at but are technical wizards for the tweaking & editing. To say we dont need instructional DVDs or anything else that can help an individual learn more is silly. Its only a plus....Everyone needs different things regarding their keyboard & uses it as such.
I have been playing arrangers since day one....many have had a Sampler, I have never needed or even know how to use one....so what? Out of all the features you can pick & choose what YOU need for your needs. Self taught, or manuals, taught by someone, or DVDs who cares.....the more we have available the better I say.

carry on