Both good brands.
Marquis made in USA, Limelight made in Mexico if that is important to you.
$7900 is ridiculously low on the V94, that spa sells for $10-11K in most markets.
The Vector21 series has some really powerful jets, I really like how you can run all of the jets at the same time or isolate the power in to just 1-2 seats. I think you will notice a bit more power on the Marquis vs the Limelight.