I think they are cheesy, fake looking, and extremely expensive, but that's just a matter of personal taste.
Ethically I don't really have an issue with them, they were supposedly created with a benign purpose rather than pure sales/marketing, although it looks like that has been the direction it has taken since.
With the amount of hybridization and breeding for deformities, tattooing/dying in the trade already, there are much worse things that get my attention.
Although the idea of gene splicing/genetic modification is kind of scary, if they can do it with fish it's only a matter of time before it starts becoming common to do it with other animals and people.