Rainsoft EC4 (Existing) vs Kenmore

Also, here are the spec sheets:
http://c.shld.net/assets/docs/spin_prod_786785212.pdf
Salt Tank Light Automatic LED
Set Salt Type •
Recharge Tonight / Immediately •
Rinse Options Normal, Clean
Maximum Capacity - Grains 40,100
Salt Storage Capacity (Lbs.) 200
Maximum Salt Efficiency (Grains of
Hardness Removed per lb. of Salt) 5,090 @ 2.3 lbs. of Salt
Type of Salt to Use
Potassium Chloride
or Sodium Chloride
Regeneration Time (Approx. Min.) 93 – 124
Number of Cycles 5
Audio Feedback Program •
Optional Recharge Time •
Water Used During
Regeneration (Gallons) 22
Minimum Flow Rate (GPM) 3
Water Pressure Limits (PSI) 20 – 125
Water Temperature Limits (F) 40 – 120
Tested Service Flow Rate (GPM) 9
Maximum Clear Water Iron (PPM) 10
Barium, Radium 226 / 228
Reduction •
Valve Type Ultra Flow
High Capacity Resin (cu. ft.) 1.11
NSF® Certified. •
Install Kit Included 1" Male NPT
By-Pass Valve, Plastic Included
Drain Tubing 20 ft. Roll Included
115 / 24V Electrical System •
Water Inlet / Valve Diameter (In.) Optional 1 1/4
Shipping Weight (Approx. Lbs.) 120
Rainsoft:
• SERVICE FLOW RATE: 9.3 GPM (CV) • SALT PER REGENERATION: VARIABLE
• DRAIN FLOW RATE: 1.5 GPM • CAPACITY: 28,100 GRAINS @ 11.2 LB. SALT
• PSI DROP @ FLOW RATE: 15.0 psi (V) • CAPACITY: 24,000 GRAINS @ 7.5 LB. SALT
• PSI DROP@FLOWRATE: 15.0 psi (CV) • CAPACITY: 13,400 GRAINS @ 3.0 LB. SALT
• EFFICIENCY: 4,470 GRAINS/LB.SALT@ 3.0 LB. DOSAGE
• OPERATING TEMPERATURE: 40-100!F (4.4 - 38!C)
• OPERATING PSI OF SUPPLY: 20-120 PSI (138-828 kPa)