Hey all, I know I could have posted this in the buying tips forum but I wanted to get advice from the pro audio world. I am an experienced audio engineer fluent on both mac and pc, however I will be purchasing my first mac very soon. I am fully aware that I will get more "bang for my buck" with an iMac over a macbook pro as far as HDD size, RAM, processor speed, etc.(mac pro is out of the budget at the moment) However, the portability of the MBP is just too tempting so I am leaning toward the MBP over the Imac. That being said, how are you guys and your MBP's holding up as far as relatively complex projects? I guess what I would like to know is, how does it hold up running multiple plugins on multi-track recordings? Any lag or latency? I'm not talking about 48 track songs, but average 10-25 tracks with live instruments and CPU hungry plugins? Here's what I have been using as far as interface and software. I suppose I should clarify that plugin libraries and projects are saved to an external drive. MOTU 828MKII Logic Studio 9(I am experienced in it but don't have a mac yet to use it on) Native Instruments Komplete 6 Cubase 5(may or may not use both logic and cubase) Halion Symphonic Orchestra Spectrasonics Omnisphere URS Everything EQ Bundle Arturia Analog Factory T-Racks and a few other smaller plugins and some outboard gear. The other question I had was, if I upgrade the hard drive and/or RAM myself, will that void my applecare? I asked someone at my local apple store and they said it would, but I have been hearing otherwise all over the place. I also read in my girlfriend's 2009 MBP manual that you can do it but obviously the drive would not be covered under apple's warranty. This is why I am a bit confused. I'm just trying to get a feel if I will be okay with the MBP or if I am being stupid and I should just get the Imac. I will wait for the new MBP to come out before making any purchases though. Thanks everyone. I don't post that often, but I am a big fan of these forums and read them just about every day.