Cwlondon, the bulbs you are describing are best used in ceiling mount fixtures where the bulb is contained in a can. The face of the bulb is all that shows, making the problems you describe mostly a non issue.
The bulbs you like the look of are called PAR Lamps, and the manufacturer numbers are as follows:
GE Halogen Performance Plus 50 PAR 36 ( I like wide flood in 50 watt and 12 volt)
GE Halogen Performance Plus 50 PAR 36 Display, 50 watt 5.5 volt (The absolute smallest beam spread available, I estimate 2 degrees).
Phillips 50 PAR 36 VNSP Compact. (Very Narrow Spot) this is 50 watt and 12 volt.
Sylvania 50 PAR 50 watt 12 volt 4 degree.
Osram (Germany) AR 111. 50 Watt 12 volt 4 degree, with UV stop.
This Osram German bulb produces the most beautiful color because of it's open architecture No glass face, just a black bar across to hold the filament and peanut capsule with the gas. The glass in other fixtures changes over time, because of the intense heat.
The most flexible fixture for these (in my opinion) is the Lightolier Dramalux museum, switchable from 12 volt to 5.5 volt (uses ALL PAR 36 bulbs) and accepts two accessories, such as filters and scrims.
For your turntable, the color is more beautiful if you scrim the stock bulb with a magenta (heat proof) gel. These are available from Rosco. In fact, their free Super Swatch book contains all the heat resistant filters you might consider, some are large enough to use without having to order a larger size.