I used Exante products, following their 600 calorie a day plan and lost 3 stones in 8 weeks. My (non-diabetic) wife joined me and followed a 1200 calorie a day plan and lost a stone and a half.
We first ordered their 4 week breakfast, lunch & dinner selection as the variety it offered looked appealing. To be honest, the dehydrated powers reconstituted into baby food consistency and weren't that appealing. The only advantage is the variety of hot & cold choices and some changes to flavours. Some were quite acceptable, some were "bleh".
Our subsequent orders, to complete our plan, revolved around the shakes & bars options. They were more palatable for us, but we tended to follow the pattern: AM - shake; Lunch - bar; PM: real food for her, meal choice for me - mainly to use up what we had left.
Nevertheless we consider the products helped us considerably and really gave me good results in terms of BG control. After 8 weeks of ND I have switched to LCHF to finish my weight loss and as a long-term strategy, as I didn't see ND as a solution, just a quick start to changing my T2 situation.
Good luck.