Amouage and Roja Dove

These brands I've been eyeing for a few years from a distance, but would they be worth investing in?

The ones from Amouage I'm interested in:
Lyric Woman (Extrait)
Epic Woman
Journey Woman
Portrayal Woman
Blossom Love

The ones from Roja Dove I'm interested in:
Elixir Pour Femme
Risque Pour Femme

That is really difficult to answer...you really need to test them. Don't think these are blind buy fragrances due to the price. 

Getting some samples in would help you out.

Personally, I would chose Journey or Epic for my wife

The only one I have used is I Blossom Love Eau de Parfum and I find it difficult to wear. Blossom is a BEAST, half a spray will fill a room with a beautiful cherry-smokey scent. It's so strong it can become too much.

I have decants of Lyric Woman Eau de Parfum and Memoir Woman Eau de Parfum and some of the masculines. The one that tempts me most is Memoir Woman Eau de Parfum . But before investing I should get a decant of the current formulation as mine is already 10 years old. One thing to consider though - if it takes me 10 years to use up a 10 ml do I need a bottle?

You'd better test them before buying a bottle