It's hilarious seeing that old Notator interface! [EDIT: I guess I should say Notator-like, as I really can't remember Notator very well... it looks *very* familiar, though.] I remember using that thing on an Atari, way back in the day. Then I "upgraded" to a Centris 660AV - what a piece of crap. But hey, I didn't know any better at the time.
Logic is kind of my "go to" app for production. I prefer working in Sibelius for most things, but if it needs to go to production, then I always wind up in Logic. I sometimes start projects in Live, since it can be kind of fun for testing out new ideas, but I always fall back on Logic. I don't even necessarily *like* it that much, but it really runs well on the Mac.
I would also recommend waiting for the fall. Whatever happens with Logic will probably be worth waiting for, and it will most definitely be a paid upgrade. If half the rumours are true, it could be a pretty welcome upgrade, since there has been a lot of talk about greatly simplifying things, and making it more Mac-like in the process. The chit-chat about multi-touch screen support is intriguing as well - making the screen act as a kind of controller (a la Lemur). But that's probably pure fantasy. And even if it were true, it would be guaranteed to take a *huge* strip out of our bank accounts! [;)]
J.