At 25' I'd say the Sadler every time - only proviso being if on the southern and probably Eastern English coasts one can barely give away a 25' deep fin keeler due to mooring / berthing costs.
Despite my sign saying ' for parcels please ring bell ' the Hermes gremlin just left a parcel on our front door mat; it was stolen, fortunately ' only ' £40 worth - the driver photographed the parcel on the mat ' come and get contents for free ! ' which proves nothing, he could have put it down...
Hermes are a whole new league of dreadful - we have had fragile packages thrown over the high garden wall for us to find much later, or don't turn up at all; a lot can't read English so disregard the sign saying ' for parcels please ring bell ' - how a switched on outfit like Amazon uses them is...
Most boats I knew if over say 28' had the mast taken by lorry - the air draft along the route must be carefully checked.
Our 38 metre barge only drew 1 metre but grounded when the farmers took too much water from the Burgundy Canal - it had a rudder with 33 turns lock to lock to give...
There's a big difference between technically efficient and aesthetically pleasing, ' the row away factor ' as one leaves the boat, heart bursting with pride, on a Sunday evening - and supposedly a good idea on someones' computer just to be different.
In the case of the OP's proposed design I...
I worked on a hotel barge on the canals around Burgundy for a season - we met a few small British yachts but I think drawing 1.6 metres would be right on the edge, pushing ones' luck.
Also what is the air draft, there are some low bridges - is he going to have the mast taken off and taken by...
I read that having paddlewheels able to go in opposite directions, as seems intuitive for turning, was in fact lethal causing dangerous heeling - after a fatal accident, on the Thames I think - such setups were banned for commercial vessels.
When I first started Solent sailing in the early 70's...