Siblings in Paradigm's Premier series, so they share a family sound. It comes down to size, output and price.
| Area | Better | Why |
|---|
| Bass | B | Paradigm 800F digs deeper - 43Hz against 49Hz. A subwoofer would even that out. |
| Amplifier needs | evenly matched | Similar sensitivity (93dB vs 92dB) - both want much the same power. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Type | depends | A Passive Center Channel against a Passive Floor-standing - a different job rather than a better one. |
| Cabinet | depends | Passive Radiator vs Ported. |
| Expandability | B | Paradigm 800F: bi-amping. |
| Price | A | Paradigm Premier 620C v2 is cheaper - $1,300 against $2,200, about 41% less; arguably a different class. |
A Paradigm Premier 620C v2 B Paradigm 800F
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
The usual trade-off: Paradigm 800F measures better, Paradigm Premier 620C v2 costs about about 69% more% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 49Hz anyway, which makes the cheaper Paradigm Premier 620C v2 much easier to justify. Think about the whole system, not just the speakers: the roughly $900 saved by taking the cheaper pair would buy a subwoofer or a better amplifier, and either usually does more for the sound than the difference between these two.
And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.