None of these card doesn't allow you to play whdload games.
Best solution for you would be LCD TV with scart connector. With LCD TV you would get flicker free hires modes 640 x512/400 PAL/NCTS and whdload games would work allso.
If you want to have true color 16/32 000 000 and / or 800x600 and above screens you need graphics card, BUT it would be supported only RTG enabled programs, like workbench, doom, napalm, wordworth, final writer etc.