I agree. Though, you have to keep in mind that the SeaLife line is pretty much positioned as an entry level option that allows you to get good photos at a much lower price point. For that lower price, you lose some some functionality. Few manual settings, no RAW, etc. The shutter lag seems to be most people's number one complaint, but honestly, it's something that has rarely given me problems. The only time I can think of is when trying to get good macro shots of those cute little juvenile trunkfish bouncing around quickly. The flex arms allow me to position the strobes how I want for the most part. Although, I'm considering adding a 2nd set of them for added flexibility. If you are using the old ball joint arms, send them in to have them extended. It only costs $20-$30 per arm or so (if I remember correctly), and it is worth every penny.
Yes, DSLR's will obviously take much better photographs, and my Nikon is all I use on dry land... But to be honest, I don't know that I'll ever make that jump for underwater. Aside from the housing alone costing more than an entire SeaLife Pro Duo setup, I just like being able to operate most of the camera's functions with one hand and not having to lug a monstrous rig around the entire time. With a SeaLife, I still feel like a diver first, and a photographer only when I want to be or I see something cool. If I were a professional photographer or trying to sell images, I would probably feel differently... I mean, I take pride in my photos, but I just do it for fun. I would possibly consider one of the other compact options available now though depending on what improvements SeaLife makes in the near future.
I bought my first SeaLife camera in 2008, and their great customer service is one of the reasons I've remained loyal to them. Another reason is that they have continuously improved their products every couple of years. The DC1400 came out about three years ago, so hopefully they are due for a DC1600 or, better yet, 2000 soon? 14MP was a benefit three years ago, but now they've been passed by. The good thing is that just about all of the cons to the DC1400 shouldn't require a major overhaul, or major price hike to fix. RAW (or at least an option for a RAW capable internal camera it at a higher price) and/or better white balance, less shutter lag, more manual settings, etc... If they are able to improve on some of these issues, and offer new products that allow users to continue to expand their skills (such as fish eye and macro lenses), it would allow their customers' skills to grow WITH SeaLife products, rather than grow OUT of them.