Hi Zermelo,
Thanks for the welcome and the information, it is very helpful.
I am leaning more and more towards the 150i for the obvious advantage of the larger aperture.
The non collimatable primary mirror doesn't bother me, in fact is a bit of an advantage as I have never owned a reflector telescope before so it makes it a bit easier to get used to.
I am drawn to the goto mount (either of them) as it will allow me to learn my way around the sky easily and as I get to know it better I can use the freedom find to star hop manually, best of both worlds.
I was not aware of the altitude range setting in the app so thankyou for informing me of that and I am also glad to hear that the scope can move all the way to the zenith.
Just need to wait for stock to arrive in UK now.
Thanks