Both strainers look nice. It is all about having enough surface area. If the mesh is too loose, it doesn't clog (good), but it doesn't strain much either (bad). If the mesh is too fine, it quickly clogs, or "blinds" (bad), but it strains very well (good). I use the extra-fine mesh (bouillion) SS china cap strainer as a pre-strainer prior to using the funnel with the fine nylon mesh screen. A simpler and more cost effective way may be to use a sanitized 5 gallon paint strainer bag inside the fermentor and then carefully lift it out after transferring the wort.
The most beneficial change in my procedure has been learning about and modifying my water profiles. Lots of internet searching and reading (and re-reading) to better understand water chemistry. I really like Martin's water profile tool and have found it to do a great job with estimating salt additions (I use RO H2O as my base water) and pH.