I use a smart candy android tv google, it's a single core a9, 1ghz with 512 ram and 4 gig built in, wifi, sd card and single usb, it's ice cream sandwich and states on the box 1080p, but in reality it can NOT handle 1080p properly, but 720p is fine, but slightly clunky as it's mouse based, but at HK$299 it bargain basement, plus it's new ish 2012, one issue is that it seems to get hot and as it's straight plug to via hdmi, thus, i use a hdmi cable extension as there is no fan and that i worried it will burn my hdmi port on my tv, but the shop stated that they turn it on for 12 hrs a day, gets pretty hot but has not burned out yet after 2 months.
you also need to download a new browser dolphin for flash video and use a old flash add on as ice cream sandwich does not natively support flash ( following apples html5) to get online video working
stamp android has no specification , meaning it's better low spec and seems like based on last year and specs ( 2.3 gingerbread is quiote old) , this could be worse based on no specifications and probably based on low specs, ie. 800 mhz, 384 ram, 1gb storage, remote control could be even worse than mouse based controls, but it does have optical out for digital sound to an home cinema amp