Thanks very much for your detailed comments. Many of them coincide with certain reservations of my own, and you've given me some fresh ideas to consider.
Regarding the Chopin:
1 - Just a little too heavy for my taste. Could be more like a butterfly telling of things to come. If butterflies can talk, that is.
I agree that it could be lighter. Interesting image of the butterfly. I would, however, perhaps interpret the rather sonorous, grand melodic gesture as indicative of a nobler, weightier animal:D
2 - Isn't this rather fast for a Lento ?
Maybe. As a general note, though, I would not interpret tempos in terms of any fixed range of metronome markings. Tempos are relatives. I personally have found many performances of this prelude much too slow, but that's just my perception and is independent of the marking "Lento."
3 - The LH is a bit too obtrusive here, grabbing all the attention. This could be lighter on its feet (easier said than done..). The final unisono run seems a bit uneven.
Agreed. I have tried to work on balance quite a bit (also keeping in mind your earlier comments on the Schubert) but know there's still much more work to be done.
5 - Kudos on mastering this very tricky piece (I find it one of the hardest of the set). It seems a bit too hectic to me though, and a bit uneven in places.
Yep, and I think the difficulty lies in being able to get the music out of it once it's well learned. You confirmed my general reservation about my performance. I'll try to work more on this one to try to give it its last degree of polish.
Thanks also for your insightful comments about the Scriabin. It's hard for me to avoid being long-winded but I'll try to be briefer here
On closer examination, I agree with you about being a bit hurried in places. I tend to be a "fast" player and sometimes my nervous system can get the better of me. We may not have generally differing ideas about musical expression, but your technical points are very well taken and I will keep them in mind as I redo these.