First post here, but this one caught my eye (sorry for the novel).
So Ghost is OK, but it's a point solution. Acronis is a great imaging engine, but it's also a point solution. We went down this road and ultimately chose Altiris because we wanted a management framework, not just a point solution.
We chose to review RIS/ADS/SMS, Altiris, and LANDesk based on Gartner reviews.
SMS was the cheapest, but we were less then impressed with their imaging capabilities and integration. We still had to consider the fact that is was Microsoft managing a Microsoft environment, but systems management just doesn't appear to be that important to them.
LANDesk was a quick setup, but imaging was not stellar and they really only worked with Lenovo from a vendor standpoint (although they were working on some stuff with Dell). We were also did not get great reference feedback, which was a little weird since we gave them 3 weeks to provide us with 2 references that had reviewed the same vendors (one was actually considering switching but didn't feel it was proper to share who they were moving to until it was done).
Altiris worked with Dell, HP, IBM, and Fujitsu and their imaging engine was awesome. Their web console didn't have a lot of "sex appeal", but they showed us a beta of their new console at the time (now production) and we were certainly impressed. Imaging was pretty straight forward and they had some pretty nice tools for hardware independent imaging. We purchased consulting time to help with the hardware independent imaging to get it done quickly and we have ended up with an imaging process that uses one image, does an on the fly driver injection (called FIRM copy I believe), supports multiple HAL's (Microsoft supported method), and does a bunch of post image functions to add the PC to the domain, deliver the appropriate software based on OU, patch, and inventory. Basically we can have a PC shipped to an end user, have them plug it in, and it will take care of itself (we don't normally, but we can and have done this).
If you just care about imaging I would do two things:
1. Review Altiris Deployment Solution and Acronis
2. Talk to your hardware vendor to find out who they use and why they use them.