Yep. AMP is a very professional outfit to work with. The EIC is an established author with a loooooooooooooooong list of professional credits. The editing staff is extremely thorough (as those of you who listen to my comma bewailings know) and the standards are high. The publishing house itself is a little over a year old and publishes everything from erotica to mainstream. Several Aspen books are on Fictionwise bestseller lists.
The contract is verra nice. I've dealt with several other e-pub houses and I can reassure you that the royalty rates are high-end and fair.
The great thing about AMP is that they don't accept 'just anything.' No Poser covers ( I like my cover art a LOT), no excuses on deadlines, and not just any kind of manuscript is accepted. They also tend to lean toward longer works which I find refreshing. Prices are on target for the reading audience.
Royalty checks and reports come right on time. The EIC is being extremely careful not to build the house too quickly. She doesn't want it to fall into the same trap as some other well-known e-pubs that have folded lately by trying for too much too quickly. She's still in the process of building her core of authors so she's open to a lot of different writing styles. My novel is non-romance straight up hard core fantasy.
Hope that answers your question.