Could anyone tell me which of the following two inflatable kayaks is best ?

Intex K1 Challenger or the Bestway WaveLine. I'll mainly be using it on rivers possible calm ocean if that would be ok, also could anyone give me any other brands I don't want to spend more that 拢100.|||The Challenger K1 is designed for lakes and slow moving rivers. It has a low profile design, so don't plan on taking it into white water rapids or strong ocean currents. The kayak itself has a streamlined design and the inflatable seat is built for only one passenger. The strong vinyl covering is suprisingly thick - a feature you would find on much more expensive inflatable crafts.|||Intex K1 Challenger, Inflatable kayaks are great there is only one problem, and it is easy to avoid, if you dont pump it up enought then it will be very hard to control, also if you pump it up in a warm place then put it in cold water the air inside will shirk and again it will be hard to control.