As secretmusic has mentioned, depending on the kind of music you want to make, I would put the money from the Cirklon into one or two other hardware synth/drum-machinse that can be sequenced from the OT.

A lot of people love the OT + A4 combo (check on youtube under dataline, secretmusic, and many more), for instance, and you can create a lot of sonic mayhem with those two.

Cirklon is great if you have a lot of synths/drum machines to sequence.