If you had the choice to buy only one of the two today which 1 would it be?
Monero or LTC? don't really need brains to decide on this

For me, it is very simple.
LTC is a Bitcoin clone (without any new features) supported only by chinese people.
Monero has a very high asking feature : the anonimity : this feature will be a very important one in the next years.
Then, my choice with no doubt : Monero.
Ltc has been around for so long and i guess too much of a long term is just tiresome. Monero now has a good price increase so for im gonna go with Monero in both short and long term. Monero also has good feature that maybe unique to other altcoins. Like its privacy but still I am not so sure about those.