it's defenitely not time to buy XMR now
Maybe BTC goes up and XMR falls down a bit because of BTC growth
I got mine for 35$
now it's 107$ ...
LTC is some kind of safe choice for now.
if you hold everything in BTC then always check that it has good price when exchanging on something else.
Btw, check the graph of XMR lately - it says, this coin is favorite for many people these days =)