Espresso n00b here but I'm very happy with my Sage Bambino. I considered the DTP but research suggested the Bambino, as the newer model, was an improvement (e.g. not sure the BE does auto-steam?). Opinion also seems to be that a separate grinder is better, as you can upgrade each unit independently, and don't lose everything to a fault or repair. I've always taken this approach to audio/hifi/music equipment so the logic is there.
I went with the Iberital MC2 grinder, which is great for expresso and can be had for £130ish. It's certainly comparable to the Smart Grinder Pro, which I believe is similar to what comes built into the BE.
John Lewis sell the Bambino. Better prices can be had from shopping around, although the voucher may cancel that out.
If you want a single unit for less ££ I'm sure this would be the case with the BE. It's a minefield seeking espresso advice online and I think a lot of folk would be very happy with cheaper setups.
I thought the first shot I pulled with my Bambino using the pressurised basket
and pre-ground coffee
was the dog's knees...