goddady and wordpress dont mix ?

i heard about goddady hosting and every one says its good hosting ,
so i fiqured why not iwill try they hosting .
so i buyed their plan on economy
and i never had a good day since ,
the site is down for or houres a day
and there is not that much visitors like 200 a day
and 6 plugin
cashing , seo ,facebook comments , relative date , ajax search
so i talked to them they say there is something that eating all my ram memory wich is 512 .
i asked them why they didnt know they say scripting and wordpress issue .
i pointed the domain to another hosting of mine and guess what !
the ram is still full
italked again they say wrong php version
now its fixed i tested every thing went ok for a secound after i hung up the site gives me server error again 503 .
i told them again , they said i must upgrade to next plan . wich i did
and the site was up and running like a charm for1 hour exactly . then 503 server error again and again .
any way i will move from godaddy for good any recommendation for cheap and good hosting ?