Hey guys, im upgrading my macbook in hope of getting another year or 2 out of it..just upped it to 3GB ram which i think is the max it can handle and i want to replace the 120gb 5400rpm hdd that came with it. first il explain how i use my macbook.... mostly sitting on firefox/chrome with a average of 10-20 tabs open... transfering my DSLR photography (12mp) to lightroom and organizing (might external this) making music on ableton and downloading through torrents then transferring to external and thats pretty much it... now ive been looking at the momentus XT because its cheaper than the SSD and can still have room, i feel like im constantly making space with my current 120gb (1tb external is ALWAYS full) I know there is a 2nd gen one that just came out but i dont know how to buy it in the UK and be sure its 2nd not 1st gen. now to the SSD option...i dont know if there is any point in me having one of these but maybe some1 will tell me different. I pretty much never shut down my computer so i wont benefit from the bootup speed...and the 128gb (which is all i can afford) just seems too small...the 120gb i have currently is always a pain...always emptying it...but then again i could just buy another external and get in the habit of transferring regularly and then i saw something about optibays (also not sure where to get them in uk) but im scared about messing up somehow..is it easy to do? i have thought about getting a 64gb for optibay and just keep the 120gb 5400rpm (or maybe upgrade to 300-500gb 7200rpm.... and then last choice is getting a 7200rpm that is NOT hybrid like the XT.... tbh i dont know anything about this and there are so many options i dont know the difference....i wouldnt mind this choice because its the cheapest but if this is not a recommended path then let me know please. EDIT: just found out my macbook is prob limited to 1.5 Gbps SATA so would i even get the speed im paying for with the SSD and would it matter what gen XT i get? hope someone can help please!