with fixed price and limited ths they give you more hashing power, imo to burn thru the coins faster (sorry I am a bit of C.T.)or am i the only one that happens to

Yeah it does seem like my next experiment should be less hashrate for a longer-term, eh? It looked to me like you could only place 24-hour long orders. Am I missing where you can rent for longer? Or do you just have to go in every day and "re-up" before the order ends, to keep it runnng for, say, a week?
You can choose the time and the type of rig you want to mine with on Mining Rigs Rental (MRR). However, you tend pay more on MRR than on NH. You can also compare prices for each rental service here: