I have less than 10 in localbitcoins and about 5 each on BTCC and their justpay wallet.
I don't trade actively, just buying around 1 coin every week or two since a few months ago.
Should I be considering some secured wallet?
No matter the amount you should get a secure wallet. If you have a substantial amount of coins, use a cold wallet (just google how to). Having a secure wallet should be number one on the list of agendas of anyone using Bitcoins. Don't store a lot of your coins on websites or wallets where the admins has access to your coins.
Right. Just use online wallet if you are constantly purchasing something using bitcoin. It will be a hassle if you use offline or paper wallet when you always buy something. But if you are just holding your coins for future use, it is better to store it on paper / cold / offline wallet.