Ehhh...I'm torn at the moment between the WK7500 and 6500 as well as the CTK7000. The CTK7000 looks sort of like the WK-7500 in terms of interfaces but the model numbers clearly differ (and I dunno how the capability differs), and the WK-6500 is cheaper than all of them but lacks what looks like an equalization panel on the left-hand side. Can someone explain to me the differences between the three? Also, are any of these weighted? I was reading in a review of the WK3800 that it was supposedly weighted, though not so well.
From looking in a printed folder (I notice about the same specifications are available on the net, like here: http://www.exilim-tours.se/euro/emi/highperformance/wk7500/specifications/ and click the specifications tab) ... I would say that WK6500 does not have the organ drawbars. In the specifications above WK6500 and WK7500 both have 76 keys (about 6 octaves). A full piano I believe has 88 keys(?), so these land somewhere in between. The CTK 7000 has only 61 keys (fairly standard "narrow" keyboard, 5 octaves). There are other small differnces such as number of built-in sounds and rythms etc. Being in a similar situation I too find this hard... and it's even harder taking other brands into account.
As mentioned by Andreas above, the WK-x500 is simply a 76 key verision of the CTK-x000 Otherwise they carry the same features as I understand it (WK-7500 has same features as CTK-7000, WK-6500 has same features as CTK-6000) The casio site lets you compare http://www.casio-intl.com/emi/high_grade/ Bascially, the main differences are (6xxx compared to 7xxx): Polyphony 48 vs 64 Tones: 600 vs 800 Rhythms (backing): 200 vs 250 The Y-man
