I ordered from the Elegoo ebay store which has lower prices than Amazon. There the 2 is $180 and the 2S is $240 (vs $200 and $245 on Amazon). So that's a $60 difference (fwiw, I did a best offer and they accepted it, so I actually paid $160+ taxes, but I assume I could have asked $20 off the 2S as well). Assuming the dual extruder on the 2S is the same red one I've seen all over Amazon, its like $15 and new springs and knobs are about $10, so that leaves around $35 to spend on a new bed surface. I was thinking of getting this dual sided one from Comgrow: https://www.amazon.com/gp/product/B09TVGDJYP/ref=ox_sc_act_title_2?smid=A2ALB3RMNIRLH8&th=1. And that's $25.

So unless the parts the 2S adds are super high quality, it seemed the better value was to get the base model and upgrades separately.

That said, I think right now I'm going to hold off on updating the extruder because I think what I might want to do is a big upgrade after I'm more comfortable with the printer where I add a dual z axis, all metal dual gear extruder, and convert the printer to direct drive (my understanding is that the dual z axis is needed to support the extra weight).

So right now I'm thinking new springs, maybe knobs, and the dual sided pei sheet. Some of these combos also seem to throw in a capricorn tube as well.

https://www.amazon.com/dp/B09TVGDJYP?psc=1&ref=ppx_yo2ov_dt_b_product_details Have you tried using a PEI sheet like this?