As with most things , its personal choice , what suits someone may not suit you , look at Bedchairs for instance
I do like my new Fox Duraltie combo chair , and as it spans the whole bed ,its no different to any other chair when sat on it like this , you can use it stand alone ,but its possible a bit low , but as I said everyone's different .
I guess the only way really is to sit on a few and decide what suites you .
I also have a Nash chair ,very much like any other chair out their ,adjustable legs and back and works well , best part of 18 years old now and still in excellent condition , but thats more to do with the fact I dont often take it fishing