Originally posted by pakuchn Also, 99.9% of the pictures will be taken hand held. Again, I’m not a pro, just someone who loves to take pictures of vacations, my family, etc, who is looking to invest time and money into the right system. Boris gave me his input, but I will be honest with you, I have no idea what he is trying to say and he is taking about K-7 which I was asking about D90 and K-x.
I apologize for having misread your original question. For some reason I thought you were asking about K-7 and D90.
Newarts indicated that
'The strength of a chain is equal to the strength of its weakest link.' In principle this is correct. However, without any intent to offend you, I maintain that the weakest link is going to be you, sir, for quite a while until you work through your learning curve and generally get good understanding of your photography. Further, I put the chain components in this very order (of importance): photographer > light > lens > camera. To that end, camera is in fact the least important link.
You mentioned that you're going to be shooting a lot of your child. It was the same very event, the birth of my older daughter, that started me on my Pentax way some 8+ years ago. I am going to repeat the most important and most useful advise I got at the time from my Nikonian friend: buy fast 50 mm prime. Well, it was film era thence, so it was 50 mm.
So I do recommend that you either buy a K-x or D90 but do buy yourself an autofocus 50/1.4 lens. It will do wonderful things for you when you'd be taking pictures of your kid(s).
Finally, although you might steer away from using flash initially, you could very well end up using it a lot. Here Nikon bests Pentax. Simply put, Nikon flash system and the way they integrate camera, lens and flash is more advanced and more reliable. It does not mean that the same cannot be done in Pentax terms, but Nikon strikes me as the best flash system out there.
So, given your budget, I reckon you could afford D90/K-x double kit (just so that you cover more focal lengths) and a 50/1.4 lens. I believe it will set up back by order of USD 1000 and you'll have some money to spare.
I humbly suggest that you don't run into buying the best of the best and the most expensive gear. There will be a process during which you will encounter great many things that you would want to try and eventually you will arrive to what suits you best. Likely it is the optimal way to proceed and it is also the most fascinating one.
Let your hunt be successful and let light be with you.