Pentair is a good choice. The SWG claimed chlorine production rates (lbs per day) are less than those of other manufactures. For the SWG, a 40K (1.4 lbs per day) or the 60K (2.0 lbs per day) would both work, but the IC60 is a better value.
Warranties are less important to some folks, but if you do go with
Pentair, a 3-year warranty is offered when purchased as a bundle and installed by a Qualified Installer:
Select Bundled Products: applies to purchases and qualified installation of a minimum of a pump and filter, and one or more of the following: heaters, heat pumps, control systems, automatic cleaners, lighting, salt chlorine generators or UV sterilizer**
*Note: Qualified Installer - Defined as a licensed professional who charges a fee for his services, and possesses a business license, contractor's license and/or resale permit. Common examples of a "qualified installer" include: Swimming Pool, Home Repair or Landscape Professional; Plumber or Electrician; General Contractor; Heating and Air Conditioning Specialist.
**Note: Bundled products - must be purchased on the same invoice and installed at the same time. If any product within a bundle is ineligible for the bundled warranty coverage then all products within the same bundle will be disqualified from receiving the three (3) year extended warranty coverage for bundled products.