In general you want to buy the most reliable, good performance, and low price SSD. But some time you can't get that such good deal SSD.
In real world you can't feel the different between those SSD you list because they have few seconds different. But you can see them in benchmark.
If you only have those SSD to chose, i will take the Mushkin Chronos Deluxe 240 for $200 now. If you can wait for good deal i will take either SAMSUNG 830 ( it was on sale for $180 before) or intel 520 (Intel Expected to Drop SSD Prices in August, link http://www.tomshardware.co.uk/intel-ssd-prices-price-drop-cheap-discount,news-39074.html).