Look at a st croix avid, sweet rods made in the states for less then $300.
I then suggest you pair it with an orvis battenkill or a redington drift. Both reels are around $100 and have click systems. As it is a 4 wt a disc drag is not needed.
If you find the Avid a little much (might be once rod, reel and line get in the picture) I suggest you look at an imperial at around $240.
Note the 4 piece models run close to the prices, take $30 off for a 2 piece.
two major things to not cheap out on are the ROD and the LINE
buy the best rod you can afford, then a cheap line holder (reel) that isn't total crap, then choose a good fly line for your setup (don't forgot your backing)
$400 is a pretty slim budget for a fly rod setup of decent quality however that doesnt meant it isn't doable. Go check out the Dragonfly rods at Army & Navy as well. Amundson also has complete setups for sale there that are around $200
I did suggest Echo however that puts you in the rod price range of $200 + just for the rod which may be pushing it.
I used to fish an 8wt Dragonfly for years and landed many salmon on it
I also had bought one of those Amundson setups for Pinks awhile back but didn't favor the rods action so I sold it.