Can't think of a reason. SLC is a bit faster at writes, but a lot of new MLC SSDs are able to fully saturate SATA 6Gb/s, so there's really no point in going any

Can't think of a reason. SLC is a bit faster at writes, but a lot of new MLC SSDs are able to fully saturate SATA 6Gb/s, so there's really no point in going any faster. If you're really worried about write endurance, stick to MLCs with a lot of spare cells (I think Intel is a good choice there).