A 340 would be nice in 22', but I do not think you would see that much of difference from the 325.
There are some threads on here that compare the 340 vs 325.

The beam is wider in a 24' by a few inches.
The weight is probably a few hundred pounds more, 22 vs 24, around 4K for just the boat.
I've also heard the same thing in the 340 in the 24 with a group of people on the boat , but have not been on one.