FWIW - I am also a homeowner/DIYer. I purchased the 14.4 X2 primarily because I liked the chuck on the X2 better. The dual charger is great (haven't NEEDED it - just nice to have). I feel that for my needs as a DIYer (not a pro), the 14.4 will have plenty of power and the 1/2" chuck will handle anything I want to throw it at (I mean, throw at it ).
The X2 chuck appealed to me because I previously purchased a 14.4V Craftsman EX (I got it on the cheap) and my major complaint with it is the chuck slippage. Probably unfairly, I associated the 'plastic' chuck of the Craftsman with the 'plastic' chuck of the non-X2 Ridgid.
Can't give any kind of comparison to the 18V (Ridgid or any other) because I have never had one that big...(let me rephrase that)...mine is smaller...(oh never mind). You know what I mean. [img]tongue.gif[/img]
Of course I can build you one of those - I just need a [new tool]!