My favs are:

Juliana Faith (looooooooove this)
and
Andrew Noel

I like them all, though I'm not too keen on Alivia or Danyel (I don't care for odd spellings).

You will want a 16 ga. straight finish nailer. This will shoot nails from 3/4" to 2-1/2", which should handle most of your needs. Do you already have a compressor? Porter-Cable makes several different kits which include a compressor, nailer(s), hose, and all fittings you need. You will find that you will need more than one nailer. When installing casing around windows and doors, I use a brad nailer to attach the casing to the jamb, then I use the 16 ga. nailer to attach the casing to the wall. I have a 15 ga. angle nailer, but I seldom use it. If you already have the compressor, and just need the nailer, go with Porter-Cable or Senco. They are the best out there. Hope this helps.

http://www.amazon.com/Porter-CFFN251N-Nailer-Finish-Compressor/dp/B002JASUQA/ref=sr_1_10?ie=UTF8&s=hi&qid=1249043423&sr=1-10

Its the oil pressure gage. As long as its in the range its fine. At idle it might be lower then on the highway. Some fords regulate it though which is good. Its usually better if its closer to high in the range, but as long as its in the range... dont worry.