I have ordered the replacement bulbs from Roy & Doug. On the first go-round, I missed the ones under both of the medicine cabinets, plus the three under the slide in the bedroom. I recently ordered more from them.
I can attest, they are easy to install (I did them..nothing more to say) and give out brighter light, and no heat.
There are two options for installation. A spring clip which will get you worse than a mouse trap if it lets go when you are trying to put it in the hole, and the screws from the old ones that go in the original holes. I took a pair of pliers and wrenched the spring clips off, and then fastened them with the original screw. My fingers thanked me profusely.