This is how I looked at it when I went for premium ep's I already had the 2x and 3x
barlows. So I looked at the FL of the ep's I was going with which are 14mm, 10mm,
7mm, 5mm and 3.5mm. So I got the 10mm then 14mm and then 3.5mm the 2x barlow
gave me the 7mm & 5mm equivilents for now, until I can replace the barlow with the 7mm &
5mm ep's.

I think you have made the right choice, it will get more work than the others if your
a visual guy.

regards,CS