I have the Hammer N4400 with ceramic guides and have had it for 2 years having changed from a SCM Minimax S45, which I had for 8 plus years. Overall I think the S45 is the best value for money and a truly great bandsaw. In my case I changed to the Hammer N4400 to be able to use the same table extensions that I use with my A3-26 Planer Thicknesser. The N4400 I have is very well constructed but I would not go for ceramic guides as I have not really found them to have any benefits. I don't think you would be disappointed with either machine but for me the S45 is a classic Italian made bandsaw, a real workhorse of a machine. Both use a lot of European made components including very good quality motors. The Hammer cast iron table uses thicker cast iron sections than the S45 and the bandwheels are also slightly heavier made but the S45 frame feels like it is much stiffer, probably down to its unique design. The N4400 has a more powerful braked motor than the one on my S45 although SCM might have changed it as my machine was 18 years old when I sold it. I never felt that either is underpowered. Both have been in stable production for many years and evolved over time and fully spares supported and not always changing models every few years like some other makes. The N4400 has tyres that can be user changed and the S45 are bonded on but my tyres on the S45 were still perfect after 18 years. My vote is for the S45 but both are excellent machines.
Nigel
Nigel