Hello Hulloleeds,
to you too, mate.
I purchased two EPs from this range, both of the 68 degree variety, one 30mm, the other 15mm. This selection was made with the scope they would be used in, a 17.5" f/4.5 dob, & that I would be rebuilding her, hence the preference for the cheaper EPs for
now. They are good enough for my purposes as I'm spending the big bucks on materials for the rebuild. I already have good 5mm & 10mm EPs, purchased long ago.
I couldn't go for a longer focal length EP here because the fast f/ratio would most certainly show horrific edge of field deformation.
The 42mm & 15mm 68degree would be a good low & mid powers for you. A high power maybe look at the 6mm or 4mm 'superplossl'. 3mm any brand is notoriously a difficult EP to use. These EPs would only be for 'gaining experience'. Along with the ones which came with your scope, 'learn' to use your scope, as Jacquie said,
.
The dob can be a tricky beast to move at high power. Be patient with youself. I often place the object just out of the field of view, & allow it to 'drift' into it to view it in a steady scope,
.
Go to a star party or two, & look through other's scopes with thier better EPs, & maybe use one of them in your scope for comparison. That is ultimately how you will see the benefit of excellent quality EPs. But learn with what you have. You can buy expensive EPs now, only to find you don't use it or them that much.
An after thought: another good reason for having a couple of the cheaper EPs is for showing the sky to inexperienced eyes. You know how to look through a scope, a novice doesn't. The EP will get touched & soiled by stray fingers & eyelases laced with makeup & who knows what. Would you subject your expensive gear to that treatment? There really is alot more going for cheaper EPs than we sometimes think.