Something large and similar to GK?

Recommendation thread, I guess?

I have a GK MB112 (earlier series, with the metal grate on it) (200W I think) (1x12"), and it's big enough for rehearsal (and probably most of our gigs, tbh) but I was thinking about something a bit bigger for gigs that I could leave at our rehearsal space. If I get something bigger, I'd love for it to sound somewhat similar. I'm unlikely to get a bigger GK combo/amp/cab unless I find a good used deal like I did for my current combo, but I haven't seen any around.

I've heard that out of "light", "cheap", and "sounds good", I can only pick 2. GK is out of the budget if I'm buying new. But I like buying used anyway. My budget is probably 500usd.
So what brands / models should I be on the lookout for? Doesn't have to be a combo.
Lightweight is preferable (my wrists and back aren't the best) but not required, as long as it's not extra heavy.

I'm pretty inexperienced at amp shopping, and my GK is my only amp (er, combo) that works well right now, so having another amp will be great.

Maybe bullet points are better:

• Light, if possible
• Sounds kind of like my GK
• 300W or bigger, I guess
• Stack or combo
• Solid state
• less than 500usd, preferably
• new or used
• not super focused on one genre

I know I need to just start trying lots of stuff in person, but any advice you fine people might have would help narrow my search

 

I rechecked CL and actually found a MB410 for a bit more than 500. It's certainly tempting... that being said part of me feels like I should branch out a bit. It looks like a good deal though....... *GAS intensifies*