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The problem with loading up on big 2" eyepieces, barlows etc. is that there is a far greater tendency to lose collimation due to the extra weight on the focuser (most focusers have a bit of give in them).
I find the laser collimator hits a completely different spot on the primary and on the bulls eye of the laser collimator when I have 1.25" eyepieces in and 2" eyepieces in.
When I'm using 2" eyepieces I have to 'offset' the mirrors very slightly to allow for the extra weight of 2" eyepieces and 2" barlows.
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