I have about $4000, what's the best setup to get?

Ideally I'd like to be able to run Qwen 3.8-Flash-Next with decent performance. I was thinking of just buying 2x Radeon AI R9700 (64GB VRAM), or maybe a DGX Spark but that was before the price hike. My brother suggested just getting a Strix Halo box with 128GB unified. I did see I could buy 6x Intel

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Ideally I'd like to be able to run Qwen 3.8-Flash-Next with decent performance. I was thinking of just buying 2x Radeon AI R9700 (64GB VRAM), or maybe a DGX Spark but that was before the price hike. My brother suggested just getting a Strix Halo box with 128GB unified. I did see I could buy 6x Intel