Hello as you can see by my Avatur I am a keen Sapphire owner I have been involved with and flown a number of versions, the first had been modified with a fully hinged canopy and instrument panel making it very easy to get in and out, my previous one had a Dumesney canopy but no wing tanks or flaps and my current Sapphire is one of the latest kit built (19-0000) with a Dumesney high arch canopy, wing tanks, flaps and a 447 Rotax, and 75 litres capacity, I weigh 85kgs am a bit over 6ft a tight fit I have to thread myself in but once settled it is quite comfy I regularly fly for 2 to 3 hours at a steady cruise of 75 knots could cruise faster but it feels relaxed at that speed. In my opinion the 447 is the most suitable engine sadly now out of production the 503 is heavier but has a faster cruise and climb the down side is most people have to add a lot of lead to counterbalance in the nose (extra weight is a drag), the Sapphire is the ultimate single seater it is a pilots aircraft very light and responsive it has great glider characteristics, loves thermals, glides well and a huge afinity for the air.
In my opinion flaps are usless I rarely use them, spoilers are the answer Tony Whitlocks (RIP) designed and fitted them to his Sapphire it really gets the Sapphire down, my approaches are done at 50 knots the landings require a little skill but a lot easier than landing a Thruster, if any faster it floats forever, if you use flaps unless you are really on the ball it tends to waffel and baloon in ground effect which turns a good approach into a messy bounce perhaps my reflexes are a bit slow.
If you would like any specific information or wanted to talk Sapphires I'm hangared at Goulburn and would be happy to chat.
Regards AG