I prefer my placcies because its lazier fishing but metals work just as good. Everyday is different just play around and see what works. The action is quite different yes. If paddle tails let the lure do most of the work but if minnows jerks etc more action is required. Jigs are a complete diff action... get the jig doing lots of fluttering and fish usually hit as its falling.  Im no master but just a few tips.

 For a newb placcies would be better. They are more forgiving with action because they have there own. Gulps are a good start as they are scented (some consider them cheating) untill you get some confidence up then i like the mcarthys, especially the large 11" ones. The most experienced will tell you to leave the rod in the rod holder and let the placcie do the work.

i prefer metals now but still carry a few placcies. Technique is very important with metals. I have seen the exact same jig fished side by side and 1 person will catch everything and the other not getting a bite. There are a few vids on youtube to get an idea. Try searching demersal jigging.

hey guys im new to soft plastic fishing as well. Just wondering if 1 ounce jigheads are too big for 30-40 m of water or is that ok. Fishing them on 7inch gulp jerkbaits.

 In 30-40m depends on drift. 1oz would be for a good day. I have used 4oz plus when the weather is bad.

They're both very effective but if I was forced to only use one for the rest of my life I would have to go plastics. Easier to work and can tempt fish that are too lazy to hit a jig. Having said that I will mostly use jigs these days as I enjoy using them more. Unless I'm hunting snapper in the shallows, then plastics will reign supreme! 

 ive been a non bait fisherman for about 5 years but its always a good idea to have someone fishing a bit of bait just not me.