help choosing appropriate bulbo for growing

[philoserenus]

hey guys,

i'm just wondering, what are some bulbophyllum species/hybrids that:

(1) appear not to have any rhizome (not leggy)
(2) windowsill growing possible
(3) the lack of an extreme scent
(4) doesn't grow huge (as in per pseudobulb basis)

i really like ones that are star shaped like lobbii, dearei, and sumatranum. but i am now sure if these could be brought into bloom... or even if they could survive the windowsill... any bulbophyllum lovers care to chip in your $0.02? thanks

i currently have 1 cirrhopetalum lepidum and is growing 2 new leads--the one lead last year didn't make it for some reason... just turned black and died =( is that a rot issue or a lack of humidity issue?

this is it from last year, can't take credit for spiking it --at least i don't think so... i bought in bloom, but this second flowering came about a month after the original bloom faded...