The Motif has a steep learning curve. If you are a newby to Workstation Keyboards you will most likely find the Motif rather daunting to Navigate and figure out how to use its many features. The new Motif ES which will hit the shelves in November or thereabouts, is suppose to be somewhat easier to use and Navigate than its predecessor. Once you figure it out you won't be disappointed in the Sounds or capabilities the Mo ES possesses IMO. In fact you should be the talk of town or at least in your own inner circle of friends by the fact that you will own the newest "Monster" Workstation Keyboard on the Market.

Best regards,
Mike

PS: Actually, if you get a Tyros you will have the best Arranger on the market (Tyros was voted Arranger Keyboard of the Year for 2003), plus the sounds on the Tyros are comparable in many ways to the Motif for quality. But then again since you already have a PSR 740, you may want to stick with it and get the Motif ES and use the Mo' for Studio Production and also to Gig with while you could use the 740 for 'doodling' around with to get ideas for songs.