As with most stuff, you get what you pay for. The OEM guards are already pretty flimsy and useless so the cheap way out might not be an actual upgrade. I think the best bang for your buck is the acerbis rally guards. If you’re really getting deep into the dirt like you mentioned then I would definitely go for the substantial upgrade. Hope this helps!
(Acerbis 2142000001 Rally Pro X-Strong Black Handguard https://www.amazon.com/dp/B000GVC9YI/ref=cm_sw_r_cp_api_i_AsOZEbD3PH1F2 )