I don't know if your looking for species or hybrids but here's some of my favorite hybrids from Hausermann's. All are easy to grow.
Dtps. Chia-Shing Royal- white, peppered with pink/purple, purple lip
Dtps. Fusheng Glad Lip- white with pink lip and a little pink around the lip
Dtps. I-Hsin Sesame- yellowish background, peppered with reddish pink
Dtps. I-Hsin Waltz- White lip, pink background peppered with darker pink spots
The ones I listed above are all around $16.99. Be sure to check out Hausermann's and the links posted by me and others above and see what appeals to you. Let us know what you get if you decide to buy something.
Just my thoughts on Phal. stuartiana... I have no personal experience with this species but I know of other members on another forum that grow this species and they say it isn't exactly hard to grow but it can be quite picky and prone to rot, even mounted. Again, just saying what I've heard, I have no experience with Phal. stuartiana.