I still consider myself a comparitive newbie in many respects, so I hope my thoughts here are of help.
If you stick with this new hobby, at some point down the track you almost certainly will replace those standard eyepieces with more expensive models..... However until you know what you like about the ones you have, and especially what you DON'T like about them, it's way too early to rush out and spending good money on something that simply may not suit you.
Observing preferences are a very personal thing, and while some eyepeices are pretty much recognised universally as being great these tend to be the VERY expensive ones - read $400 to perhaps $900 each! For many of us it's a matter of balancing preferences against each other, and always balancing these against price.
If I can draw an analogy for a moment - if you were buying a car what kinds of factors would you consider about that car? Something economical, something new or 2nd hand, something comfortable, something with a Name and Prestige, something that REALLY performs and turns heads (price not a factor)? Ok, you get the idea.... You wouldn't buy a car without knowing what you want it to do, consider your eyepiece purchases the same way.
One more thing - it can take some time peering into that scope to teach your eye and brain to receive and interpret properly the scant few photons that the scope provides - this will make more sense down the track. Other factors will have greater effect on your viewing that the kind of eyepice you use, in a reflector most particularly collimation (ie optical alignment of the mirrors) so read up and practice / learn this skill well too before chasing more eyepieces, the ones you have now will do fine while you get a handle on all these other new skills. You will know when you are ready to upgrade / replace your existing eyepieces.
Cheers!
to IceInSpace! What type of skywatcher did you get?
