W2 & 1099 vs W2 & S-Corp

[patrickpat]

I am on W2 full time job earn 100K
I am also getting 1099 from part time job, about 10k per month

My CPA suggested to open S-Corp to get some tax benefit.

Personally I don't see much benefit by having S-Corp if you already have one full time job making 100k +.

Question is , should I ask my client to continue pay me on 1099 or should they pay on S-Corp ? which method will save more on tax ?

Thanks,
Patrick