Been doing Krav 3 times a week for 6 months now. My experience of the kit I bought:
Stuff that works phenomenally well:
Topten Superfight 3000 16oz sparring gloves
Great wrist support, very high quality build, amazing padding. You can hit people without worrying that you'll hurt them, unlike some of the $5 gloves that are flying in my direction!
Shock Doctor groin guard
I've taken full force knees straight at my tackle and hard groin kicks from behind, and this absorbed the impacts without any problem. Very comfortable cup, easily washable strap. Essential.
Opro pro mouthguard
Much better than any boil and bite mouthguard I've tried, this thing grips your teeth and fills your mouth with high quality material that absorbs shock very well. The Opro team do a great job custom fitting it to your mouth, so it's comfortable and effective.
Bytomic hand wraps
Tough, not too stretchy, nice and long. Better than the ProBox wraps I've used, and much better than the standard non-stretchy fabric ones.
Stuff that breaks soon after purchase:
Venum Kontact hand wraps
Wrist support is very poor, and the stitching came apart after a few months, leaving the gel and plastic to poke out. For the 1 minute it saves you relative to putting on proper wraps it's not worth it. Plus these are three times the price of the bytomic wraps.
Hope that's of some help - would be great to hear your thoughts on the above products