I followed the last post and read a ton of great comments so I know there will be a bunch more on here to help you out but I can share the piece of information I learned recently. I was in a similar boat in that I upgraded from Vortex Kaibab 15s to Swaro EL 12s as my primary tripod glass. What I immediately noticed upon setting up my ELs was even with the slight reduction in magnification (15 to 12) the QUALITY of the picture I was viewing through my glass was so greatly improved that it completely changed my glassing experience. Not just the "wow these are so great" experience, but rather the way I was able to better dissect brush, shadow, and generally the way I could now SEE things. Contrast, clarity, depth - all these things came together in a way I simply hadn't seen before. It was explained to me in these same forums but until I saw it for myself I wasn't really able to comprehend what they were saying and I'm sure it will be similar to what you'll experience. My point in saying that is I recommend spending some really good time doing some quality, disciplined glassing with your 10x42s and once you've done that take a fresh look at what optic you think will best compliment what you have. That way you'll get a solid grasp on what you have and you will yourself be able to best answer the issue of adding complimentary optics. Good luck and have fun with the process!