Looking at them on TW, it says the 5" is actually 4"? What's up with that. Also I've read some reviews that they don't swim very good? I'm specifically looking to buy the 4" (Actual length is 3.5") and 5" (Actual length is 4").

Yes, your right on the sizes.  The other ? I think your asking is if they swim good.  I think that they swim just fine.  I fish them 95% of the time on a yamamoto swimbait jighead.  The only negative thing that I would say about the Basstrix is that they sweet really bad. 

So the "Actual size" category on TW is the real size of them?

_{Try the 4.5" Strike King Shadalicious. Some people turn their noses up at them but I love 'em and you can usually find them at a good price at Dicks.}

_{KVD Magic is Killer.}

I looked for the shadalicious, all TW and BPS online have are the swim n shiner.

I looked for the shadalicious, all TW and BPS online have are the swim n shiner.

At TW, look under Swimbaits and then Soft Hollow Body.

Found en, very nice looking bait. How much you reckon a 4/4.5 inch version of either one of these baits weighs?

I use a Gammy 5/0 1/8oz weighted superline ewg hook and it fits the bait perfectly and you can cast it a mile and also work it at any depth by allowing it to sink.

Think the total weight is over 3/4oz for the bait and weighted hook?