Due to complexity in the nature of eyepices, it is one of the most difficult questions to answer and is ultimately the end users decision in what to get.
I am trying for alrounder solution but expect I want to try mostly deep sky. I personally want to get a selection that will increase in magnifacation from low power widefield to high power wider field as possible and close quarters planetary.
The best overall and from previous threads is wide field lenses but are the most expensive and some very heavy
I would like to start by getting 13 or 14mm then 40mm approx. I was then going to get 2 and 4 x barlow to give 6 possible magnifaction level eg: 40 (alone), 14 (alone), 7mm with 2 x barlow and 3.5 with 4 x barlow, then with the 40mm can get 20mm with 2 x barlow.
Later as money become more available I would consider getting direct lense without using barlows. I am tossing up 1.25" or 2" but tending towards 2".
Consider what you want to look at. I personally won't make a final decison on lenses until I have been to a couple of sky parties, as I live in a notorius light polluted location and really can only see bright stars and planets.
It is an important decision as they are expensive and need to last a long time.