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While not an expert at all, I was wondering why you wanted to be in the 20 or 22 range...I think Ausastronomer is right in suggesting that the 31 mmT5 might be a better go for low power wide field...
Of those Naglers I have tried, I like the T5s better than the T4s (I put the T6s in between) but I am not too concerned about eye relief...and have not used either with a Paracorr.
Take John up on his offer before you spend your "cold hard cash"...
On a side note, you know deep down in your heart that you are going to end up with a case full of premium eyepieces anyway to take full advantage of your fine telescope...to not do so would be a crime...so you might as well hunker down and get started...
Were I you, I'd start with a Paracorr and then (after using John's eyepeices and experience) start filling your eyepiece case as quickly as your wife and family will allow.
Clear Skies!
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