I have the predecessor to this baby and I love it - the interchangeable sleeves make it soooo versatile!
The only slight annoyance is the magnetic charging plug, which tends to fall off very easily if knocked or brushed against. The toy itself is lovely, though.
Both are lovely, the desire really packs a massive punch and is very rumbly.
We prefer the Tracey Cox squishy one though, it’s softer and gentler to use. Really lovely toy.
Both the desire and the mantric are really nice bullets. They both go on sale quite a bit, so if you want it really cheap you could keep an eye out and try and catch them when theyr reduced.