Have no direct experience of Dysport so maybe I was wrong to comment on this. This is just what I've been told.
The molecule size thing is right though isnt it?
Currently we use Xeomin and have always had good results so somewhat loathe to change now. I know Dysport is cheaper though and you're not the first I've heard to use this.
What are the advantages in your opinion of Dysport over Xeomin?
In answer to your questions -
No the molecular size you mean (ie referring to dysport/azzalure and the increased risk of ptosis) is not correct.
All botulinum type A's have exactly the same molecular structure. There is no difference in kDa load whatsoever. This is sales/marketing hype from Allergan, which is not backed up by any scientific basis. What Allergan don't show is the differing injection techniques which obviously alter the outcomes greatly!
Look at Andy Pickett's research studies on the comparisons (there are also many other studies cited on his papers). He is one of the 'worlds' leading scientists on botulinum toxins. (Really - he is). There are an awful lot of myths surrounding this issue. What this man does not know about botulinum toxins really is not worth knowing. He is extremely credible and lectures across the globe. Thousands of practitioners use dysport/azzalure - so really, I am not suprised I am not the first you have heard! Nothing new here.
Xeomin - I have not used so do not have any personal comparisons. The reason I do not use this is because the company do not (and refuse to) publish any credible data to support their claims regarding the protein load. I am aware that on a lot of individuals, xeomin has absolutely no effect. This is because there has to be a degree of protein loading to stabilise the botulinum molecule. So their science really does not add up. I think there is still development needed for xeomin to become more popular (but thats just my opinion - and many colleagues).
Cost comparisons - really there is little difference. I do not advocate the use of one toxin over another. I have used botox and dysport (and continue to do so).
If you can, I would recommend going to Nice with Galderma - really excellent cadaver workshops and lectures re - botulinum indications. Invaluable. Benjamin Asher (carruthers equivalent for dysport) provides really informative lectures.
Remote prescribing (you asked me to define) - is exactly that. Prescribing botulinum toxin without a face to face consultation, ie remotely. Really not good practice. Against NMC guidelines, and also IHAS. The GMC have also recently stated their opinion on remote prescribing for cosmetic injectables, endorsing IHAS and the NMC. Whether in agreement or not - remote prescribing for botulinum toxin is not considered best practice. Look at IHAS website. Its easy to find.