The puma cat tights work well and should last you ages. They are aniti-microbial too so they won't get a permanent stink either. Great for keeping warm when you have to train outdoors (or even indoors) in winter.
I don't believe they (Pumas or any other brand) assist in recovery though, I think that's rubbish.
Warm yes. Performance enhancing no. Improve recovery? No way. So many factors affect recovery, like diet, sleep, warming up, warming down, massage, supplements, ice baths etc. Wearing tights does nothing for recovery!!