I am glad that finally an experienced developer can say the same things I've been saying all along, and I've been nailed down for them eveytime by fanboys! Windows 10 for phones is close to release and is far, very far from finish. Look at the overall behavior on most devices! because let's face it, most devices are at least midrange with 1GB of ram and QC at 1.2GHZ. How does it work?? Loading.... Resuming...lags etc. The same goes for older models: 920,925,1020,820. While 930 and 1520 are the ones that can barely run it more flawlessly, are not the only models that people have!! AGAIN, many have midrange models, many won't spend such cash to buy the new 950s, or don't want to. MS cannot simply release this OS with such performance flaws! It doesn't matter anymore that is a beta! it is close to finish line, it should NOT behave like it does, it should not drain the battery like a powerhorse, it should work MUCH better on all devices that at least have 1GB of RAM.
Very few here are realistic and have done a comparison on 8.1 and 10 on performance on various models. It's clear that 8.1 is flying and 10 is like a dead snail!...ok not really a dead snail, alive snail but still SLOW!!!!! And the user interface, shrinked down PC look a like, mixed up hamburger and pivots..well this is another thing that the design team at MS has done an embarrassing job at...
I have also had a 1020 that lucky for me did not suffer from the freeze issue after 8.1 update. 10 on it was a real pain!
all this and the lack of apps and updates to those apps made me jump ship. Still I feel that I really miss my WP and from this my anger against Microsoft! NO QUALITY AT ALL!!! after so many years...maybe Panos got some sense into those two new lumias...