IMHO Gulp shrimp ought to be outlawed they are so effective.
j/k but they are pretty effective in the 3" colors mentioned (also pearl white ;-)
I use them with a 1/4 or 3/8 ounce jig head, mainly targeting flounder but using them have caught speckled and white trout, red and black drum, southern and gulf and northern kingfish (ground mullet & whiting), ladyfish, hardtails (blue runner and baby jack crevelle), catfish, even a few pompano.
If I used a Fishfinder Rig (or Carolina Rig) I would probably switch to the
floating Gulp shrimp pearl color (again in 3" size).
The popular Voodoo shrimp is a tough plastic artificial with no scent, as is the DOA.
The Voodoo shrimp has kevlar molded in the tail so it won't get bit off.
The hook is molded onto a 'standup' style jighead which doesn't sink or rest very "naturally" IMHO.
I prefer the 3" or 4"
Savage Gear Manic Shrimp (also with kevlar in the tail, but) with a 'swimbait' style weight molded onto the hook to give a more "natural" fall and presentation.
The
DOA is another popular and proven lure, but at twice the cost of
H&H TKO Shrimp (which have "natural looking" black eyes), they are NOT twice as good (if at all better IMO).
The
Live Target Shrimp look most "natural" (to me) of all the unscented arty shrimp, but are fairly expensive.
Hope this helps!