I would highly recommend NETRIGGER when it comes to making any type of net he is a master of his craft, he has been making nets for years and cuts no corners, quality and satisfaction guaranteed just look at the sample of the net he has posted
The t20 and t38 are the same its just the t38 is the newer version of the t20 and the pills are easier to change, performance wise you should not see any difference
If you believe every thing Brian Plumber wrote you must be very naive, because most of it was fiction not fact, did he ever own a top running dog or terrier,
If you do your home work you will probably get these straight from china for a fraction of the price you are paying in the uk, and they are delivered in 5/7 days by dhl