A few recent favs
Sophronitis coccinea 2N
Brazilian species. 2 inch flowers on a nice, small plant. This has been in bloom for weeks now.
Tiny guy from Ecuador. 3/8 inch flower. Side and front views.
Small growing species from Brazil, Peru and Bolivia.
Species from Myanmar, Thailand, China and Vietnam. 1-1/2 inch very fragrant flowers on a 12 inch plant.
I've had this one for a few years and it just gets better each year. Over 50 flowers this time around.