I look at speaker impulses sort of like I look at plugins: you can never have enough. What? I've got 1,000? Well, another 100 ought to finally satisfy me. Anyway, recently when I was searching ir's I came across these:
https://zombiecabs.com/ For $5 you can snag a sampler pack (regular packs are $15). I did and was impressed. If you're in the market for ir's they're certainly worth a look.