KRK is not road-ready imho.
If you like your Mackie’s, you might want to check out the HD-series. I ended up getting the 18″ HD1801 version (it sounded more tight than the 15″ surprisingly) and one is more than plenty if you only have a 2-speaker setup. You can then upgrade to the HD-series tops when you make some more money.
I have the 1221’s, but they have some others that are equally great, just serve different purposes.
I can truly recommend them. The sound is better than anything else I tested (direct A/B comparison in showroom), build quality is good. They are (relatively) light. Lot’s of digital amp power. Very good DSP.
Whatever you do, make sure you get something that has wheels or can have wheels added. Or fabricate a wheel board. You do NOT want to carry a sub around more than you have to. Respect your back!
Greetinx,
Chuck