So, i know this has been covered, but im just looking for some more opinions. i know the pros and cons of these lenses, but im trying to see what other people have done that were in the same predicament that i am currently. my current lenses are 12, 17, 75. my plan is to fill the space with 25 pana and 45. so instead of buying the 25 pana, i can scoop the 12-35 and have flexibility almost to 45mm. (which would be the next lens) so my thoughts are, sell the 12mm, buy 12-35 or keep the 12mm for lower light and buy the 12-35.? i have a feeling once i buy the 25 1.4 i wont want to bother with the 12-35, so maybe ill just have to buy the 25 before making any other decisions.. thank you for your time..