The answer to that question is certainly buying what is going to give you pleasure, or your partner. You should know by the time you want to buy one of these Sex toys what turns you right on and what gives you the most pleasure. Some of the best adult toys have been dildos, the perfect rabbit, recommended for those who have not tried any sex toys before, vibrators and nipple massages. The perfect rabbit attends to all of the genital regions on a female, but it is quite well used by men as well to get a different thrill.
Cheap sex toys can produce just as good a feeling to you like the more expensive ones. You should simply experiment with whatever you have and try different places or ways of applying the gadget. The best adult toys, usually, have a battery, which provides the sensation you need to achieve orgasm or simply pleasure. Most are waterproof if you like indulging in sex while you shower or bathe, so you will not do any damage to yourself or the apparatus.
Of course, sex toys are improving and evolving every day, so what gave you pleasure only a year ago may very well have improved considerably. The vulcanized rubber that many of the old-fashioned sex toys were made of now has been replaced by a skin-like material and are very much more lifelike as well as flexible.
Whatever your choice for favorite best adult toys, you must ensure you take care of them. This means keeping them clean and supple. Most sex toys come with instructions as to how you should care for them and clean then. Often they have special oils or cleaning materials that should be used, but most can be cleaned simply by washing with soap and water, much the same as your body.