Have a look at the thread that Chris posted, its got a lot of good info and might help you make your mind up. Personally I like to try and avoid electrics as much as possible so not keen on the td5, then again I've never driven one and I've heard people say they're great engines
Well in my experience I've owned various 200 & 300 TDI's - My last Defender was a TD5 which I disliked enormously and some more, nothing I liked about it. My current Defender is a 300TDI which is a sound engine and a lovely drive, although fuel consumption is a tad excessive, that said my favorite any of the 200TDI's. It's just a solid reliable engine which is home mechanic friendly.
not a lot of difference between 200 or 300 ,what was wrong with td5