I have one amp at the moment and thats a fender frontman which is 15 watts,

so I want another amp considering I have 5 guitars and someone might come round and play on one,

so should I get a standard amp like I have already,

or should i spend more and get a good amp say a louder one?

so i wont have to buy another amp?

im not in band or anything, but i may be soon :/