which card is most worthwhile now to buy , lol for mining
You missed responding with the most important piece of information.
Does the BTC generated pay for the electricity cost used and leave you with a profit?
Or better yet, what is the price you pay for electricity.
In less than 50 days, most GPU miners will be losing money on each share, as the cost of electricity will exceed the value of the bitcoin returned (presuming the exchange rate then is not much different from today). That is even without any ASIC shipment. Add ASIC and that only exacerbates the GPU miner's woe.
So, unless you get free electricity, or really low (like you live near hydro or get it at $0.07 per kWh or less), then you probably shouldn't be considering adding GPU capacity unless you have another use for those GPUs (e.g., gaming).