Thought it would be helpful to give you all a list of what I'm currently using the most these days... & I'm going to try to include some tidbits on what works for me & what I love about each of these with this post. I DO have other lenses and SLR bodies in my stash that I pull out from time to time for various reasons - but these are the ones that get used the most.
Canon 5D Mark ii - My main SLR Body. I purchased this in early 2012. I love the full frame shots that it takes and shoot everything that I use it for in RAW. The size of the file is amazing when it comes to being able to adjust ANYTHING in the RAW-JPEG conversion (I use Adobe Bridge for this). Because of this, I don't use any type of custom white balance - just shoot with auto WB & make all my adjustments while converting the RAW file.
That said, the one thing I don't love about shooting 100% RAW is how I'm always having to juggle storage space and move things off my (4+ year old) iMac to an external drive. But it does force me to organize and manage files and photos.
Canon 24-70mm 2.8L Lens - The first "L series" lens that I splurged on over 4 years ago. And let me just tell you that this lens was WAY "cheaper" then - and still a HUGE spluge for me. I have since come to realize that it's been worth every penny. It's the main lens that I use when I shoot client family photo sessions - I love the flexibility it gives me without having to compromise a nice bokeh when I want that too! This is my go-to lens when it comes to travel, too.
Here's an example of a recent portrait style shot taken with the 24-70mm 2.8L... (shot data: ISO 400, 1/400, f2.8)
Canon 50mm 1.2L Lens - I've had this lens for about 18 months and I have a love/hate relationship with the it. My sister Kristi tells me that its sweet spot is at about 2.2 - which I've been testing out recently. I get my favorite shots from this with a single subject. I don't like it so much for shooting both of my boys together (when my goal is to have BOTH boys in crisp clear focus), and if I'm being honest I find it slow to grab my focus at times. But keep in mind -- this could all be attributed to my own learning curve with it and I'm still experimenting.
Canon 70-200mm 2.8L Lens - My newest addition. Over the past couple years, I kept finding myself in situations with the 24-70 where I WISHED that I had more zoom power (ie sports/games for the boys, school programs, vacay scenic type shots) and decided to add this one in to my collection. I'm so glad I did. It's definitely NOT an everyday type of lens for me (since I tend to be an up-close and personal type of shooter). I do think it's great for both portrait quality candids and travel shots -- and can't wait to try it out when tee-ball season resumes in the fall.
I debated quite a bit when I bought my 70-200 on whether I needed the IS (Image Stabilization) option or not. IS added an extra roughly $1000 to the price at my time of purchase. In the end I decided against the IS option -- I knew that I'd be mainly using this camera in brightly lit instances (ie daytime sports) and that with my SLR body being able to handle higher ISO's quite easily, that I'd be able to compromise my ISO (without losing too much in image quality) if I was in a lower-light situation.
Canon 50mm 1.8 Lens - I bought this lens with my VERY FIRST canon rebel SLR body way back in 2004. And you know what... It still works AMAZINGLY. It's incredibly lightweight, shoots and focuses QUICKLY in low light, and produces a great bokeh for the price point of the lens. I still use this lens a LOT - perfect example is when I want to just toss my camera into my purse (not a seperate camera bag) and not worry about potentially damaging my 15x more expensive L series 50mm lens. ;)
Funny story - I thought my 24-70 was "broken" on our recent California trip (it had really just been switched into manual focus mode and I didn't realize it...!) - so I ended up using my 50mm 1.8 lens for a BIG portion of the shots. Here's one from just after sunset in Laguna Beach... (shot data: ISO 1000, 1/500, f2.8)
Canon 85mm 1.8 Lens - This lens goes way back in my photo-equipment history too. Christmas 2005 I think...? I LOVE this little guy -- it's super light weight for it's reach and VERY crisp... but it's the one lens that I probably don't use enough or give enough credit too. I recently pulled it out when I was shooting spring shots of my boys and fell in love again... (shot data: Av Mode, ISO 400, 1/400, f3.2)
...I'm going to save talking about my point-n-shoot camera bag for another post -- but will be sure to update this post with a link to that when I do...!