Hello there,
I myself have been looking at Digital photo frames in the past couple of days, my requirements were simply a quality display, not fussed about a remote. From searching through posts in this forum and other websites, I have focused on offerings from the usual big names, particularly Sony, Toshiba and Jessops.
Toshiba have an 8 inch offering with good resolution for few pennies short of £50.
Toshiba Gigaframe L80 but it has no remote. Usually about £70.
Jessops also have a similar offering for about the same price, this has been talked about in other threads in this forum with mostly positive comments
Jessops 8 inch Photo frame. Again currently on sale.
Tesco also has a similar offering for a few pounds dearer, their technika brand
Technika SR08
Obviously these are all 8 inch versions, from what I have seen of the 7 inch versions, kodak, Phillips and Sony appear to produce frames with good displays. There are of course the cheaper ones from Amazon or Ebuyer but you get what you pay for really.
Really would advise on actually seeing them in the flesh and picking one with the features you want and the display quality you are willing to live with. The ones I've linked to stood out as bargains to me.
Hope this is of use,
Cheers,
Professor