I have had and do own a couple of XW s 10 /5 mm might get a 3.5 one day , as mentioned above extending the eyeguard to the sweet spot that suites you makes these eyepieces extremely comfortable to use .
I also had the 14mm for quite a while and found it really good despite the bad press it gets .
The other longer lengths I dont have experiance with , I do recall the 30 and 40 mm being not overly popular on some performance issues ? and ( they were pricey) then you you couldn't buy them anymore and people forget .
Last edited by GrahamL; 15-09-2019 at 02:55 PM.
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