Starting to shop for a convertible seat for DS and have narrowed it down to either the symphony, triumph or momentum. Which would do you have/would you recommend?

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Re: XP: Any Evenflo car seat users here?
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THIS! I think it's call the sure latch (ancors under the seat in cars never then 2001 or 2003 I think). It's big, but SUPER comfy, soft and easy to break down to put in the wash. ALSO, you can use is from 5 pounds - 100 pounds so you'll never have to buy another carseat again.
We have the Symphony and Triumph. We're very happy with both. We spent a lot of time looking and definitely preferred them to the other brands, including Britax.
We got the Triumph when DD was still RFing and I found it hard to release the belts in that position. So when we needed one for the other car, we got the Symphony, which is essentially identical except for the belt tightening/loosening. I did find it easier RFing. But once we turned DD FFing, it made no difference. The Triumph was just as easy. In fact, we now prefer the Triumph belt system.