Where are the tablets with 4:3 aspect ratio?

So this is really weird. Firstly, I looove the form-factor of the iPad. According to me it is the best form-factor for a tablet device.

I would buy an iPad actually, but as I am already heavily invested in android...It would be really really great if I could find a good android tablet with 4:3 form factor.

Do you people have some options?

I dont want something from the cheap end. It needs to be reasonably powerful. Xda-Support would be nice.

Any ideas?

Cheers,

ANT

P.S. Before anybody asks, I hate the traditional narrower tablet displays (16:9? 16:10?). I like holding tablets in potrait mode. I want to buy a tablet mostly because of reading pdfs. Narrow displays feel ergonomically bad to me.