A Bristell is a bit faster than a Sportcruiser but both depend on if you have a fixed pitched prop or a VP/CS prop. A Bristell will do 120knots but at that engine speed you will be burning 20litres per hour. A 914 engined Europa may be slightly faster but will be burning 25litres per hour for the same engine speed
Sorry that's incorrect! My 914 Europa Tri gear burns 18 litre an hour at 115 KTs, that's at 28 Map and 5000rpm,
admittedly that's with a constant speed prop, Being a tri gear it isn't the lightest or as streamlined as the Mono but is way more efficient than you stated,