No Ibanez seven. Not happy.
A problem with Ibanez is that they use cheap woods and are usually very slimmed down - a bigger guitar, like one of the ESP/LTD Les Paul-style guitars or a Schecter, preferably made of mahogany, will sound thicker and respond better in just about any situation. Ibanez guitars are also very overpriced, and very few come with pickups that are made well. Schecters come with EMGs or Seymour Duncans, ESPs come with EMGs... hell, the stock pickups in the Deans and a new BC Rich I've played slay a good number of the aftermarket pickups out there, so you're just going to get those guitars sounding better.
That aside, guitars are going to feel different around the 12th fret or so - your string is cut down to half its 'open' length and less, so it's just going to behave differently. Your guitar also has to compensate for the slightly elliptic vibration of the string - this is one of the reasons why necks are bowed and not completely straight - by leaving the string with a little more room to 'play' around there - but in all fairness it may be set up wrong, so check out projectguitar.com to see how to set up a guitar well. Any way you cut it, though, different parts of the neck will play differently, and while you can set it up in ways you like to an extent you're never going to get identical everything all up and down the neck.
As far as playing with fluidity, if your guitar is not falling apart you have no excuse for blaming your equipment - I willingly set my action high and use thick strings for the sound alone, and I still have enough fluidity to play just about anything I need. It comes down to practice - you could stick a pair of dimes under my Dean's high E at the 24th fret and not budge the string, if even touch it, and I learned the solo to Under A Glass Moon on that same axe. If you were playing a Wal-Mart guitar with frets popping out and the neck turning into a rollercoaster track, you might earn some sympathy, but fluidity does not need come from low action any more than pick attack should come from having a gold-plated bridge - it's how you play. Get lessons and learn to use a metronome, and you'll build up speed on any guitar - get a guitar with a really low action and a flat fretboard and you'll be able to play differently on that guitar, but the minute you touch another axe you've lost it. Hell, if you get shredding on a guitar that doesn't play well, you won't get any worse on an expensive guitar that's tricked out to fuck and back - but it's just as easy to play horribly on a custom-shop Jackson as it is to play horribly on a Squier Bullet.
Jeff