Purchase Decision Question for PA1000/700 users

[moontom]

I'm seeking an arranger mostly for drums/perc in home studio.
Just played the i3 recently and was surprised at how good the kits sound (Triton era I gather).
I can afford the PA1000 but I'm wondering if either of the PA models currently available (and they're not all that available) are too much keyboard for my use case. it would be great to have the Chord Sequencer function and the KAOSS effects, but seems like the primary need is covered by the i3 and/or EK 50.
Are the PA kits sonically better?
Can I change percussion kits to use w/ the pre-programmed styles?

Seeking any insight on rhythm w/ these lower-end boards vs. the PA line.

thanks in advance....