I was initially looking at separate heads and various speaker cabs. I do like that idea, but then the cost and complexity goes up. When i played keyboards in a working band, i used separate heads and speaker cabs (back in the day of heavy stuff!). Once i started using combos (Roland KC amps - i know, not the best), it did occur to me that combos are one carry and no real set up time pulling out items and connecting cords (let alone forgetting the speaker cord or small amp head/mixer altogether). Since i am not gigging much on bass, my plan is to buy a very good simplified combo - keeping it simple as possible for carry in and out. As for separates, I like the Subway, the Tone hammer and Genzler 350 units. just not ready to commit to separate pieces at this time.