I have been mining at home with just one R9 280 X, get around 24 MH/s with it. I did Ethpool for a lttile while, took about 6 days at the time to get rewarded with a block but since then I just solo mined in and then in a week I got two blocks which i thought was ok, but since then nothing but thats the luck of mining I guess
When the difficulty rises fast, it is better to do pool mining. When the difficulty is stable, it is better to do solo mining.