That’s a hard question.
Look at http://www.wyse.com/products/hardware/peripherals/index.asp for officially tested peripherals. But there is no inkjet printer for XPe tested.
I have installed quite a lot of different printers for my customers and never had issues getting them to work with Wyse units.
At one customer we tested HP clients and did not get a HP Laserprinter to work under XPe. We had no issues with Wyse XPe clients. 😉
So, I really cannot recommend any special printer but generally speaking all should work fine.