I would say that TRIM is a pretty desirable attributes for an SSD if you have Windows 7 and don't plan to use the drive in a RAID array (TRIM doesn't work if the SSDs are in a RAID set). I personally wouldn't buy an SSD without it.
> Could somebody look at the review below and tell me what numbers correspond to the access times?
For CrystalDiskMark the bottommost "4K" figures best represent the access time for the drives. (They don't actually say tell you what the access time is, but a drive with faster access times would score better in that test).
For the ATTO benchmark it would be the topmost "0.5" results (same comment as above).