Growing them well

Just look at how large the leaf is. 

Begonia collecting strategy: Practice self control & stop acquiring on sight; keep range narrow but grow them big. That idea has come to me after another visit to OJ's. She has 3 species only: U400 (I got starter leaf from her), one flat round (unknown to me) and this one prominently featured in this post (again the name is unknown to me). There's also B. Martin's mystery which I've excluded seeing it provides little challenge to grow. 

Can you spot U400 and other other flat one? That's because they're both sorry sights looking undecided whether they should live on or not. The third one on the other hand is a different story and takes up the place of pride, rightly so, in an otherwise unkempt garden plot. The size of some of the leaves is impressive. 

Here's the idea: focus on growing my begonia plants big and well; and not acquiring more diversity. Frankly, my present range is already wearing me out and at the brink of being unsustainable. I shall endeavour to simply admire the collections of other hobbyists and enthusiasts online (as well as offline) while nurturing and cultivating what I have in size and stature. 

Now what I need is a theme for my streamlined collection. Any ideas...?

Luxuriant and full of character. Discovered name would be B Popenoi.

Standing out with unusual leaf patten and stem growth - B. Popenoei. 

Generally fuss-free and undemanding of attention. No shortage of new leaves emerging.

My ongoing attempts to grow this one. Baby steps.

Confession: I've been at this same stage for ages. The pot hasn't changed. Are there ways to make it grow faster and bigger?

Latest attempt to grow from rhizomes. Notice the pink coloured knob? Looking promising.