IMO 2" is the only way to go for pushing the widest FOV you can get...at maximum, the 2" eyepiece can offer up to 3x the field area compared to that of the 1.25" barrel.
But they're not all heavy, just many are. I've mentioned the Paragon before which is about 500g, and the Baader Aspheric 36mm is maybe slightly less (and slightly less FOV).
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