Agreed with everyone about Jessica Steele. The reason she's so good is she used to be part of the roster @ 'Naughty Nuru' , an escort agency specializing in nuru that operated downtown Toronto 2014-2015.
Cici Palmer and Cleo Knight also used to work there and offered nuru independently like Jessica, but it looks like they've both taken time off due to the pandemic.
The main differences as mentioned, are the ladies from Naughty Nuru (Jessica the only one left) use proper nuru gel, and they heat it up in a bowl prior to use. Although Jessica's regular GFE rate is $300/hr, and the nuru rate is $240/hr, YMMV but you could very well get BBBJ/CIM or CFS with the nuru rate. The main differences are for the GFE rate its 2 shots and you're spending the whole session fucking her. With the nuru rate, the majority of the time (30-40 minutes) is a bodyslide massage that builds up to 1 shot at the end, followed by a little more massage if time allows.
I've tried the Flirt Spa Nuru twice since Naughty Nuru closed. Once in 2016 and again in 2017, both times was disappointed. The possible advantage of flirt over Naughty Nuru is its an actual massage setup (table + jaccuzi/shower) versus with Jessica/NN where its an incall condo and on a bed (with a plastic cover). For some though, the bed might be preferred. Flirt stopped offering nuru during covid, and it looks like they still are not offering. The Flirt Spa attendants do not heat the oil, so its cold. Real Nuru oil has the thickness of jello when not heated. The fact they don't heat it, and its still somewhat liquidy makes me think @ Flirt they don't use actual nuru oil and just a thick undiluted bulk massage oil. In terms if what Flirt's Nuru lacked; they girls I saw didn't do a proper bodyslide. It was basically a standard massage with a shitload of fake nuru oil on the massage table. An air matttress on the ground would have been easier and the rooms have space for it, but they don't do this route. Instead, its slippery af and the massage table is quite skinny so if you flip over while shes straddling you might knock her off!