Those Philips SBMH PR38s are nice but expensive. I totally lucked out about a year ago. There is a commercial surplus place here in town that sells all kinds of overstock. They had the Philips 25w SBMH PAR38s in both spot and flood for about $8 each! That is about 1/10th of the usual retail price. I bought only 3 because I don't have much use for them around the house. They can't be used outdoors in uncovered fixtures.
I go to that store frequently and was surprised that someone did not snatch up all of them - perhaps a retail store owner - because they could save a ton of money on power use if they switched over from halogen PARs. Even more than a year later, there were a few left.