Big difference ($$) between Carlube and Miller Nanodrive though, what made you move away from Carlube?
The engine sounds more 'tappy' on the top end i.e. noisier.
I did an oil change last night and went for Shell Helix Ultra (get it when ECP have a sale on). You can get 5ltr Elf and gen filter for around £25-£30 on the bay of e. Oil is personal preference as long as you stick to the correct grade you cant go massively wrong i dont think.