Battery help please

I'm looking for a replacement battery and certainly don't want to pay the £140 Redline are asking for a KTM one.
Can anyone advise which is the correct MOTOBATT battery for the Superduke (its an '07).
I found a recent thread which referred to MBTX9U but a search on ebay suggests CTX9-BS is for the Superduke.
Can anyone point me in the right direction please?

One of these, YUASA are good brand too.

http://www.ebay.co.uk/itm/GENUINE-YUASA ... 2a0bb9f7c9

ballistic evo 2 12 cell standard post. Just put one in and it is a killer battery. Not one problem starting now!

Thanks chaps

Motobatt MBTX9U is for the SD

Fit a shorai, antigravity or ballistic evo and get it over and done with....