What are you trying to filter out?
If you are trying to filter out taste and odor, you should go for a carbon filter. For sediment, you do not need a carbon filter. All of the filters you listed would work fine, but the one that is best for your needs depends on what you would like to fir your water. That being said, 3m recently launched new RV and marine filters that are very good systems. You can take a look at the entire product line at http://www.filtersfast.com/3m-RV-Marine-Filters-cat.asp. Their top system has many benefits that you will not find with any of the filters you listed such as
Benefits of the WV-B3:
- Minimizes Concerns regarding biological contamination while improving the taste, smell & clarity of your water
- Connects to Your Existing Faucet or the Main Line on your Recreational Vehicle or Boat
- Saves On Cost and Storage of Bottled Water
- Sanitary Quick Change Design
- Easy Installation (20-30 Minutes)
WVB3 Specifications:
- Reduces Bacteria up to 99.99%
- Reduces Algae up to 99.99 %
- Reduces Parasitic Protozoan Cysts up to 99.99%
- Reduces Mold Spores up to 99.99%
- Reduces Chlorine >95%
- Reduces Sediment, Dirt, Rust, Sand, Silt down to 0.2 Micron
- Patented Dual-Zone Nylon Membrane Bacteria Barrier
- Patented Carbon Block for Improved Absorption
- 1/2" Connections
- 3.5 GPM Flow Rate
- 15,000 Gallon Filter Capacity
- 15 7/8" x 3 1/4" x 4"