I'd heartily second Boa2's recommendation (El Cant de la Sibil la). Montserrat Figueras can do no wrong and has an utterly astonishing voice. Get that specific version as there is one other out there that she did that is not quite as well recorded IMO.
Also I enjoy some of the masses of Zelenka... I think the Mass of the Holy Trinity is the one more widely available that I enjoy.
You'd probably enjoy other works of Arvo Part as well...Te Deum comes to mind. I really love Alina as well, but I don't think I'd put it quite in the same category...perhaps it is more soothing than uplifting.
Finally, one that may not otherwise come up as it is a polarizing work; most either love it or hate it. I find it very moving, but it is more in an ambient, minimalist sort of way: Gavin Bryars', Jesus Blood Never Failed Me Yet. Read a bit more about it before purchasing as it may not be the kind of music you have patience for.
Marco