There's not much choice among spectrum analyzers with price below 2k USD. For the money you can buy used spectrum analyzer like Advantest R4131D from early 90's. But there's always the risk that you will get a unforeseen problems with a used test equipment.
I choose between Siglent SSA3021X and Rigol DSA815-TG. But when I watched a Teardown video from EEVBlog I've definitely decided to buy Siglent SSA3021X.
Rigol DSA815 is a good spectrum analyzer but Siglent SSA3021x is much, much better! Not just because frequency, it had better noise floor, better phase noise, higher RBW and larger resolution display.
I'm very happy with my new SSA3021X! Siglent SSA3021X is the best spectrum analyzer for its price if you don't need frequency range higher than 2 GHz.