I am hoping folks can help clear my thinking on this. I am looking at three tele zooms -- I have them all in my possession currently. In the past, my travel kit was the 14-150 and the 20mm. Still a great combo, IMO, but now that I've got the prime trio, I decided to look into the other tele options, as I'm not sure I'll need the full range of the all-in-one. Additionally, I was thinking IQ might be higher on a dedicated tele than an all-in-one. Well, here's my impressions so far. I'm not looking for other lens suggestions, nor am I looking for debate on the merits of the lenses. Just some input on thinking through these three, based on what I've concluded: The three have similar color and contrast output on my EPM1 The three have nearly equivalent focus speed (the P45-200 was slower when I got it, but after the FW upgrade, it's as fast as the other two) P45-200 pros: performing better at 150mm than my 40-150 or 14-150. Colors are kind of the same, but corners are noticeably better and sharpness is better at pixel peeping levels (at 150mm, where I've been testing all three. Maybe I need to test the P45-200 at 200mm) I like the zoom ring better (nice rubber grip) OIS for movies, though movies at tele length for me is VERY rare Brighter at same FL throughout the range than the other two lenses Ships with lens hood. $200 Cons: MUCH bigger than the other two. MUCH heavier I'm using the EPM1 more and more. It handles fine on the EPM1, but doesn't travel as well (i.e. the EPM1 + Oly zoom fits in my jacket pocket fine. The P45-200, not as much) 40-150 Pros: Small and lightweight, and travels very compactly on the EPM1. $100 (it's in pro in terms of price, and also no paranoid fear of loss or damage) Cons: Slower at similar FLs than the P45-200 14-150 Pros: 18-40mm! If you need it, you have it right there Small and lightweight, and travels very compactly on the EPM1. Cons: $200-300 more than the other two Smaller aperture at similar FLs than the other two Just thinking out loud, but appreciate the favor of any feedback/thoughts/points/questions, etc. around the above comparison.