I have the 500 210. I had a big gig this past weekend and it kept cutting out. I bought this amp to use instead of my Ampeg PF800 with two cabinets for ease of use (I'm getting old, HA). I missed my PF.
I love Ampeg but if your looking for a good combo amp, you may want to give Fender "Rumble" series a look. Nice amp and the same price point and lighter.