I am configuring my iMac and as we all know I save a lot of scratch by going with a smaller SSD internally. The real question for me though is about performance with Lightroom. I am a wedding photographer so at any given moment I'll have likesay, 3000 raw images to cull and edit, deliver and archive. I'd like the best performance for the buck. Obviously what's best would be to edit active projects on a 1TB SSD but this is expensive. I COULD get a smaller internal SSD and edit via a 7200rpm external USB3/TB drive, or SSD. But my question is, is that worth it? When deal with a catalog of images would I see significant speed gains when using an SSD in LR? Or would I simply see those gains when importing images. Exporting seems fairly processor intensive so IDK if that bottleneck would also benefit by having an SSD. So basically, my question is, when editing images in LR, would I see 'significant' speed gains in actual workflow, by storing my active projects on an SSD? Or is a 7200 RPM drive fast enough to keep up with everything else that's going on. At minimum I will have a 512gb SSD internally for my system.