For bang for buck, is the sw 450 ok? a little bit more is the rw10.
Thanks
The SW-450 is bottom firing, with a back port, while the RW-10 is front firing with a quarter front bottom port.
It all boils down to you on where you'll place the sub and how you'll use it (HT or audio or both)
The SW-450 is easier to place and integrate within the listening area as compared to the RW-10, but the RW-10 once properly placed/integrated offers better 'finesse' over SW-450.
Of course, your ears and wallet will still be the last to judge which is which.