Britax Advocate/Boulevard ClickTightChicco NextfitCosco Scenera NEXTEvenflo Symphony DLXSafety 1st ContinuumSafety 1st Grow and Go (Basic and Air)Safety 1st Grow and Go EX Air
Specifications 
Seat NameBritax Advocate/Boulevard ClickTightChicco NextfitCosco Scenera NEXTEvenflo Symphony DLXSafety 1st ContinuumSafety 1st Grow and Go (Basic and Air)Safety 1st Grow and Go EX Air
Expiration10 years8 years
8 years8 years10 years10 years10 years
Rear Facing5 to 40 pounds
Up to 49 inches
5 to 40 pounds
Up to 49 inches
5 to 40 pounds
19 to 40 inches
5 to 40 pounds
19 to 40 inches
5 to 40 pounds
19 to 40 inches
5 to 40 pounds
19 to 40 inches
5 to 50 pounds
19 to 49 inches
Forward Facing20 to 65 pounds
Up to 49 inches
18.65 inch top harness slots
22 to 65 pounds
Up to 49 inches
17.5 inch top harness slots
22 to 40 pounds
29 to 43 inches
13 inch top harness slots
22 to 65 pounds
28 to 50 inches
16 inch top harness slots
22 to 50 pounds
29 to 45 inches
16.5 inch top harness slots
22 to 65 pounds
29 to 49 inches
16.5 inch top harness slots
22 to 65 pounds
29 to 49 inches
16.75 inch top harness slots
2 year old minimum
Booster LimitsN/AN/AN/A40-110 lbs
43.3-57″
19" top belt guide
40 to 80 pounds
43 to 52 inches
18.5 inch top belt guide
40 to 100 pounds
43 to 52 inches (43 to 57 inches for Air model)
18.5 inch top belt guide
40 to 100 pounds
43 to 57 inches
18.5 inch top belt guide
Features 
Seat NameBritax Advocate/Boulevard ClickTightChicco NextfitCosco Scenera NEXTEvenflo Symphony DLXSafety 1st ContinuumSafety 1st Grow and Go (Basic and Air)Safety 1st Grow and Go EX Air
Fits Newborns
No Re-thread Harness
Premium Lower Anchor Connectors
Lock Offs
Anti-Rebound Bar
Additional Information 
CSFTL ReviewBritax Advocate ClickTight ReviewChicco Nextfit ReviewCosco Scenera NEXT ReviewEvenflo Symphony ReviewSafety 1st Continuum ReviewSafety 1st Grow and Go Review
Safety 1st Grow and Go Air Review
Safety 1st Grow and Go EX Air Review
Buy OnlineBuy Advocate ClickTight at Amazon
Buy Boulevard ClickTight at Amazon
AmazonBuy at AmazonBuy at AmazonBuy Safety 1st Grow and Go at Amazon
Buy Safety 1st Grow and Go Air at Amazon
Buy at Amazon
Buy at Walmart
Buy at Target
Retail Price$349.99 Advocate ClickTight
$329.99 Boulevard ClickTight
$299$44.98$200.00$149.99Safety 1st Grow and Go $179.99
Safety 1st Grow and Go Air $189.99
$199.99