Me & my clients love Monu.
I think it gives great results, is excellent quality & looks good. Some products smell nicer than others (the dry, sensitive skin range is my favourite - geranium, rose oils - mmm, lovely!) but all the smells are nice.
I get fantastic results with every client who has the esssential oil facial. they always walk out looking extremely radiant, glowing & hydrated. It's also a very relaxing treatment as well as fab results.
The only facial I'm a bit disappointed in so far is the active collagen bio which has not wowed me yet with amazing results but, to be fair, I think this is because I have only had one-off clients try it and I really think you need to have a course of them to get real results.
I have also found the range retails pretty well too.
The main downside for me is that I would like to have a dabble at a few bits of vitru (mens) and Renu (anti ageing) but you can't do that. You have to buy a full kit of each to buy any of the products and I can't afford that or justify enough demand so don't have that option. Also, minimum orders are £75 which is a bit of a pain.