Hi, Ive been playin bass for a while on my 15 watt fender amp, and am ready to move up. I need an amp that will be heard and sound decent over a mic'd drumset and a marshall guitar amp (im not sure how many amps it is but its like a speaker cabinet and it has a box that sits on top with all the controls and stuff... I think it is a "half stack" or something?) But anyway Im not lookin for somethin huge cuzz this is just for jammin in this guys house with a bandroom. We play like just rock music. I need for this amp to be loud enough to be heard and sound decent. I was thinking about the fender Rumble 100... with the 15' speaker. I heard it was pretty loud and good for the money... or I was thinkin the Bassman 150... its a little more but i was wondering if it was louder since its 50 watts more, but its only a 10' speaker. I was wonderin if someone could give me some advice on what to get... i dont want to spend more than like 400 or around there. thanks.... oh and its just a fender squire p bass.