I never saw one of those Zoom eyepieces. Don't know anyobe who has one. I know a few people who have tried them. They all say they sucked. Don't know what the problem is. I will say this though, if they were real good, I think lots of people would have them. I don't think there is a cheap way to get more for money. You get what you pay for.
I have a 12"LX200. Not the new GPS. I have 4 main eyepieces that I use.
Meade 40MM super wide 67 degree field.
Teleview 22MM 67 degree field.
Meade 14MM ultra wide 84 degree field
Teleview 8MM Radiant 60m degree field.
Of course this is over $1100 worth of eyepieces and I didn't get them all at once. But since I got them I never use my older ones. Those include the Meade 26MM super plossl that came with the scope, 32MM Teleview plossl ($110 eyepiece), 40MM & 17MM Serius plossl from Orion. There's nothing wrong with any of these, the others just blow them away. They focus sharper, wider field which makes a big difference and better eye relief. I tell you, once you get the bigger better scope your have to go for some expenive eyepieces to appreciate what the scope can do. It's like buying a $4000 receiver and CD player then using $150 speakers. You have to go for the $1500 speakers or your not goona get the full effect. Same with the eyepieces. I show people the difference all the time. I put the $300 Meade 40MM super wide in, then swithch to the $60 40MM Serius plossl. The field is smaller the stars not sharp and not as much resolution. Big difference. It's like the difference in watching a 12" TV and 35" TV. I recommend getting one good eyepiece at time. You won't regret it.