I've been revisiting some of the pieces by Sofia Gubaidulina broadcast by Radio 3 in the Gubaidulina weekend in January. Some of them come across very well, especially the mammoth Triptych Nadeyka, which didn't receive universally good reviews at the time. There is a very appealing mixture of devotion, seriousness and naivity, which is not dissimilar in some respects to Messiaen. The only living composer that is in any way similar is James MacMillan - I've also been relistening to his choral / orchestral work Quickening (from R3 yet again), which is very impressive.