Hi,

I'm an intermediate singles players looking to get some new rackets. My current racket being the ARS 90s, the head-lightness and whippyness are features I really like about it. From what I've googled and chatgpt'd the auraspeed 100x H and TD seem like the most like-for-like replacements. I've also looked into the Bladex 800, and 90k II.

Are any of these at all similar or should I be looking for something completely different?

Hey, I used to use ars90s for a year or two when first released, it is a very nice racket indeed. I swapped to nf800og afterwards.

Bladex800 and 90k II not similar, unless you wanna try them, I wouldnt recommend. both are fairly stiff rackets, especially 90k ii
You may try yonex nf 700pro/tour, jetspeed 12 ii kinda feels like a bit headheavier version of it (super nice racket in my humble opinion), also you may enjoy arc 7pro/tour. 100x I have no experience but for what hear and see, it might be nice replacement.
Also, arc 7 and nf700 pro and tour both great and since you are intermediate tour would be more than enough. You can get these rackets second hand fairly cheap depending on your location