I'm not the best pump guy but my choice would be another 1hp Full-rated pump, but make it two-speeds--you'll LOVE having the lower speed as it will save money, be quieter even though you have to run 50% to 100% longer (it's STILL cheaper than full speed).
I've been delighted with my Hayward SuperPump 2spd, but I wouldn't be brand-biased. You've had good service with Dura-glass--look into another. Search the forum for info on them...there should be some.
Be VERY wary of dealers trying to sell you 1.5, 2 or even 2.5 hp pumps. Unlike cars, HP isn't nec. the best thing. If 1hp did you well for 12 years, the latest 1hp full-rated (not up-rated) should do you even better. You might even be able to get a .75 hp 2 speed and save even more $$$ on electric.
Now I'll let the pros sound off.
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