Skin or boxes?

Short long story: I opened like 54 boxes and were really bad 1 ultimate shard(already had it)+ 3 legendary shards+0 gemstones. I still have RP for some more, but I already know that will be a lot of champion shards and others skins will mostly suck.

So, what would you do? Buy and Ultimate/legendary skin in order to don't be tilted about all those lost money and avoid depression and suicide or open for more boxes and pray for a Soulstealer Vayne/Hextech Annie, or at least a good ultimate/legenday/cool legacy skin that you want?

This is just a pool