ipad 2 screen protector from amazon (£8 for 6 - terrapin ones),will post link when I get chance although a quick search will bring them up,perfect fit,has a hole in it for the ipad home button but its off screen on the black surround - no trimming required
Learnt from many past mistakes that the cheap,cheap screen protectors are crap - terrapin are still pretty cheap but are very very good quality - my sensation lasts 6-8 weeks with a terrapin one on & thats in a dusty/cementy builders van - I tried a real cheap one & its was rendered pretty much unuseable inside 48 hours)
& by far the best way to get no bubbles (& this is no joke) - for a start make sure youre in the kitchen or bathroom (a lot less chance of dust or hairs) - even run the shower/or hot taps for 5 minutes to get a little stema in the air.
get a large bowl /baking tray - fill it with boiling water from the kettle,leave it 5 minutes then put the screen protector in- make sure its fully covered ,leave it another 5 minutes - it will go very floppy/supple
now fit it (it doesnt matter if there is still a bit of water once you peel the first protective layer off - a tiny bit is ok ,dripping wet is not - its easier to push water bubbles out from under it than air,to remove the water bubbles lay a glasses cleaning cloth (lint free) over the screen & push over it firmly with a credit/bank card - youll get the majority out with the external piece of protective layer on,the rest will come out easily once you do the same process with the outside protective layer removed - you cannot tell there is a screen protector on mine at all apart from the small hole which is missing on the protector itself
as I said damp is fine,dripping is not !!
I got used to this process (& I was worried the first time) as its the only way to get a screen protector on my sensation xe which has a concave screen which curves upwards on the outsides,without using this hot/boiling water method its impossible to get the edges to stick down - after doingit successfull on my pride & joy £400 phone ,I now use the same method for everything
this may seem extreme to some,but a bubble in the middle of the screen would pretty much kill me to look at,especially day in day out - I now have it down to a fine art - the only prob is the constant hassle of friends now asking me to do theirs once theyve seen mine