Not a judgment on you, just wondering why I'm not having end issues.
I generally take one attack from the primary, and I never use pool attacks. I will use Blackstaff, and Epic attacks, however. Usually I'm busy buffing/debuffing to fit in full attack chains, though on my Beast/Time and Best/Nature I have all three attacks and use them frequently to stack Pack Mentality. Of course, Time and Nature both have End recovery tools...
My Demon/Dark has two whip attacks, black staff, and Epic Tendrils, plus holds, etc. Same sitch with my Bots/FF... Two rifle attacks, nemesis staff, force bolts, plus electricity epic immobilize, etc. Neither have End recovery powers.
Unless I'm purposefully being lazy, I'm using powers, but perhaps the key is I'm not fitting in overly high end use MM primary attack powers in tight attack chains? I weave primary attacks in between my other powers.