Slammer and a Hudd are like apples and oranges. A slammer type bait targets the 0' to 5' zone in the water column while the hudd is a bottom bumping deep water bait for the most part. A slammer type can be used "most effectively" when the water temps get up into the upper 50's while the hudd works best in cold water or in the heat of the summer when bass are deeper.
If you are just starting out with swimbaits, IMO a slammer type bait will build your confidence much faster then a hudd type bait.