What product are you talking about. Ikelite makes quite a few products, from compasses to video housings? Ikelite is known for providing quality products at reasonable prices and providing excellent service.
1) Cameras. The Auto 35 is arguably the best point-and-shoot for the money when combined with the strobe and macro kit. The Aquashot is pretty lame by today's standards.
2) Dive Lights. Excellent, but I've owned others by Princeton and Underwater Kinetics. I haven't found one brand to be demonstrably better than the others.
3) Housings. Excellent value and quality. Well designed but a little bulky in some instances.
4) Strobes. Without a doubt the best performance for the money.
5) Accessories. Plenty of accessories for various other brands. I really prefer using their synch cords because I trust them. Nikonos accessories range from so-so to excellent.
There, I covered most of the line, what specifically were you interested in?