Wow, I think you are asking a question that is impossible to answer, Katie!
On her self titled album (Meav) I especially love these songs:
1. Im a Doun
2. I Wish My Love Was a Red Red Rose
3. Since You and I Were True
4. The Death of Queen Jane
5. One I Love
Okay, before I know it, I'm going to have named off every song, so I'll just stop here. Meav is a beautiful album, you definitely can't go wrong with it.
On Silver Sea, I especially love these songs:
1. You Brought Me Up
2. The Wicked Sister
3. Newry Boat-song
4. Port na bPuacl
Anway....once again, you can't go wrong with this CD. Silver Sea has beautiful songs- many with a "sea" theme. Maybe that's why it's called Silver Sea.
Meav also has another CD, Meav: A Celtic Journey which she released while in Celtic Woman. It is another beautiful CD, but I don't think I'm going to list off my favorites right now.
On her CDs, Meav also sings many of the songs that she sings with Celtic Woman, such as The Last Rose of Summer, Danny Boy, She Moved Thru' the Fair, and Si do Mhaimeo I. Meav's solo versions of these songs are also exquisite.
Keep in mind that what you hear on Meav's solo CDs is more "intimate" than what you have heard of her with CW. There aren't tons of instrumentations. Mostly you are just hearing Meav's voice with some background vocals and less elaborate instrumentations. Of course, this is not a bad thing, because the more we hear Meav's voice, the better.
I know I didn't really tell you which album is better than the other, but that's mostly because there is no possible way I could choose. Eventually, I would recommend owning both because they are beautiful!
Kelsey