Just answered this a minute ago in a PM, but here's the basics of what I said:
If you are ordering from Mouser, get the Wima MKP10 - 0.1uf or 0.22uf. The voltage rating on those is 250V, but film cap voltage ratings run high. There's no penalty by purchasing a higher voltage rating. In fact, you may be limiting your selections with film caps by trying to find a 63V.
Electrolytics are different. They get very big and expensive as the voltage rating increases, so you want to limit them to 63V or 100V, at most.
The Wimas are box caps, which are really more convenient for PCB's. They're not quite so easy with point-to-point, but they still have plenty of exposed leads to make it fairly easy. They're as good as it gets, IMHO, unless you start getting into boutiques. Then things could get expensive, but they are not warranted with the Starving Student.
You can find Vitamin Q's and/or some Russian film caps that are fairly cheap if you want to go that route, but it's doubtful they'd make that much difference. Some have used them and have been very happy with them, but I'm not sure they had a comparison.
Again, we need to emphasize: the Starving Student sounds great without film bypasses. The interstage couplers are different, but boutiques are not going to make much difference there, either, IMHO.
P.S. The orange drops may sound great, just saying that it's more of an unknown and an experiment, perhaps.
