Digital BW, The Print

I have an Epson R2400 which I'm happy with. However, I may be doing
some traveling soon, and would like a smaller printer (but not really
small, 4x6 in. print size) to take with me that can:

do good black and white prints, 
possibly toned or color as well,
make prints that are somewhat archival quality,  
take at least up to letter sized sheets,
can make prints on matte/fine art type papers (possibly switching to
lustre/glossy would be nice).  

Any recommendations out there?  Best, David.