Would you still buy a ddjs1 ?

No.

Well it is old, so expect support to last significantly shorter than in a new model, it has no performance pads, the layout is outdated and cumbersome, the platters while big are not as responsive as in other controllers and some functions of the software cannot be accessed as it was made for a pretty old version of Serato.
Hence it is not a controller I would recommend, even if it is cheap.
With an SR you have at least the basic functions all available and you can always upgrade using an addon like a reloop Neon if you need flip controls etc. which is not good with the S1 since it simply does not have the basics to make that a good choice.
Hence I would not recommend the S1 to anyone currentlym which does not mean it wont work, but you could have significantly more on other platforms.

Well, you DID ask if WE would still buy one today. And the answer to that is no. That does not mean it will not work out for YOU.

After all, there is absolutely noone out there (or here for that matter) that can tell you what will and will not work for you.

DJ software, gear selection, it’s all highly personal. Your best pick might be my worst nightmare and the other way around.

At the very least you didn’t pay much money for the unit. So, go and get your experience in with it and decide for yourself if this was bonus or bust.

We wish you good luck with your purchase.