My first handheld was gameboy and i really enjoyed it,then move to gameboy color and gba sp, i really2 love it
Then i move to psp in 2006 i really like it too, at this time i prefer handheld more than console until i buy xbox360 in 2009, then in 2010 i buy ndsl but i didn't enjoy it as much as psp and xbox360 the libarary games on nds is more than psp ,nds games is fun but feel bored easily..after a while ndsi xl was release and the design and how big the screen is makes me buy it , turn out i didnt like it,iinm it was abit heavy and harder to play using stylus compared to ndsl,end up selling both ndsl and nds xl

In 2012 i buy a 3ds bcause of kingdom hearts i really love that game but i didnt enjoy it much on 3ds probably bcause the screen is darn small, i have a headache eventho i dint turn on 3d effect, and im not sure is it the screen or screen protector the screen is really bad in sunlight(also bad on vita) but when im in car sitting beside window, its hard to see the screen , in 2013 i bought ps vita, i feel everything (build quality,apps,screen) and others are much better, i sold my 3ds ,shortly after that nintendo announce 3ds xl, but i decide not to buy it bcause of my expericne with ndsi xl.
But after few months my vita is just collecting dust,there are few games that are worth to play like uncharted and killzone but till 2014 i dont think there at least 20 games that has quality of graphics and gameplay like uncharted and killzone, most of the games are like flash games graphics(cartoon) , assasin creed graphics was like just bit better than ps2. Now i decided to buy 3ds xl so i can finish kingdom hearts and there alot of games like pokemon and mario that is fun but im not so sure if it will last long like gameboy. Currently im playing ps4 but sony ..their games library really crap for the first few years, i only enjoyed my ps3 and psp when they are in their final year

Heavy - that the reason why i sold my ndsi xl last time.
Its really uncomfortable..play first few mins wont feel a thing but after 30min can already feel the heavyness of the ds

I used to play games while lie down or in bm they said meniarap.. i dont really play while sitting

I think u are right but yeah i decided d
I will buy one just for kingdom hearts but other games looks fun too i will try a few hope it will entertain me like how i stick with fifa games for a long time

But vita is more comfortable to hold but tbh ps vita isnt the best in weight too..also feel uncomfortable after some times bcause the buttons i think is more smaller than psp

As for ndsi xl last time it is uncomfortable because to hold big screen and another hand is holding the pen

Its like..i dont know how to say but i have an ipad.. holding it vertical is not comfortable than horizontal..vita is like horizontal probably thats why