was amazing and I'm still pumped from it 3 days later.
And it never gets old/goes away.... Congrats!!!
Here's the thing on amps. You're going to 3-5 pages of varied opinions from a thread like this one.
I don't know the brands they have in Australia, so can pass on some advice that would be helpful here in the US and hope it translates to something accessible to you.
If Fender rumble series is accessible to you it should do you just fine. Get as much amp as you can afford. as for tone, smaller speakers are going to be punchier and move less air, and larger speakers are going to be woofier and move more air. My personal criteria is Fender is more budget-friendly, but quite serviceable. Not sure what your speaker size preference would be, but this is an example of a Fender that would probably work for you.
Fender Rumble 200 1x15" 200-Watt Bass Combo
The next leg up might be to look into a GK product. They make a 12" combo that's pretty good. They run about $420 USD new, and would be less used. I know this ad does you no good, but this is the one I'm thinking of...
Gallien-Krueger MB112-II 1x12" 200-Watt Bass Combo
This series comes with a matching powered extension cab, which wold probably do you forever if it came to upgrading your setup. Most likely the extension cab would never be needed.
Hope this helps. In my opinion, used is the way to go. Just try before you buy and make sure everything seems good.
Hope this helps!!

