Slave flash or remote trigger?

I want to start to use flash with my photography. I don't know too much about flashes. I have a nikon D200. I found slave flashes which seem good(plus they are cheep) but i don't know if they are any good? Or should I get a real flash and just buy some wireless trigger for them.

I was looking at this for slave flash.
http://www.amazon.com/...004288M2Y/

Or is there anything else that is better?

And for real flashes and a cheep wireless trigger, I was looking at.

FLASH. Http://www.amazon.com/Nikon-SB-400-Speedlight-Digital-Cameras/dp/B000KKPN5C/

WIRELESS TRIGGER. Http://www.amazon.com/Wireless-Studio-RT-16-Trigger-Receivers/dp/B0034Z4PYK/

So if you know of anything that is good or would be better, then can you please help me. Thanks

Added (1). So are slave flashes any good? Or are they just a waste of money? Or should I just get normal flashes plus wireless trigger?

I think sometimes just jumping in and learning is a good way to do. In this case, though, I'd recommend taking a little time and see what options are out there.

A great place to learn about off-camera flash is http://www.strobist.com

They have lots of information on what to look for, sample setups, etc

Get whatever one you like,

personally i would get a flash/trigger/slave set up that is not branded to one camera maker, then you can use it for all photography not just 35mm with one brand

me i have no time for brand name flashes (nikon, canon, sony etc) they are basically a rip off, you can get a no name flash and a slave for $50 off ebay they do the same job as a $500 branded flash

That Polaroid is absolutely useless, don't even bother.

The SB-400 is not a cheap flash, this is a cheap flash: http://cgi.ebay.com/...35adea5e2e and it will be better for the radio slave you already picked out.

OK, no, they won't. You picked the wrong receiver type, those will only work with a studio flash that has a sync port. Here is what you need: http://www.amazon.com/...003GVE7RW/ these look almost the same in the pic, but they have a hot shoe at the top. The flash sits right in the hot shoe, and there you go.