Official Brompton electric versus conversion

Hello, I have 2021, 6-speed Brompton which I am tempted to convert to electric. I’m not sure whether to go for a conversion kit through a company called Cytronex or to buy a second hand electric Brompton.

With Cytronex if I get the conversion plus integrated lights it will cost about £1,500 and I think I could get a second hand original electric Brompton for around the same price.

The thing I like about the Cytronex kit is that the electric part/battery sits in the bottle cage area so it doesn’t mean you lose the front luggage block, i.e., I would still be able to keep my Borough bag.

Any thoughts or opinions on which option might be better? Thanks.