I used to own a Miele espresso machine and switched to Nespresso for convenience. My Nespresso is very close to the quality of my previous machine that cost 10 times more. And Nespresso is way more convenient.

But taste is very subjective. I suggest you visit a Nespresso boutique to have a taste for yourself.

Here is the store locator in UK. If you are nowhere near one of their UK boutiques, look for one where you travel.

http://www.nespresso.com/uk/en/storeLocator