There is always something to cast! Like rogues/feral/warriors are always depended on either nrg/rage or spamming the same button. Enhancement feels very fluid, though I have to say for a beginner the rotation might be hard, but i advise to install some addons (like WeakAuras), to track Maelstrom stacks, totems, flameshock uptime and such.
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I played all melee classes as well for a lot of years and Elemental was my first ranged/caster experience in wow. Now I'm testing Enh and finding the thing that annoys is not always having something to press. What am I missing? Between SS and LL CD's I shock and use my MS stacks as appropriate. Apart from long cooldowns and totems that's pretty much it right? I find the 8 and 10sec cooldown for SS and LL making the rotation feel a bit slow. Hope I'm doing it wrong cause it does appeal to me