I just joined and I got, this summer, a Spark LIVE because of it's capabilities and power.
At 150 watts with a 3 band EQ, a battery option and-to my surprize-a working bluetooth feature, I use it for almost everything.
I am practicing for a duet with the wife at a talent contest she has next July at a dance event in the Twin Cities, and I play Fever (Peggy Lee) from my phone to my Spark and have my bass plugged in and I am continually surprized by how good everything sounds.
It isn't too heavy and with the battery and a set of 5G wireless connections, I can do almost anything.
I have bigger and louder stuff too, just for flexibility, however for practice in my living room, it works very well.