As much as I know about basic effects I know nothing about looper except that mine a Digetech JamMan is noisey when plugged up. Even if it's not on it makes terrible noise in the power supply? Is that normal? Besides noise I would like better quality recorded loops. Mine is so old I'm sure many are better. I want it to be pretty simple. Mainly use it for song ideas and little demos since I have no computer to record on. Around $150. What should I look at?