If you are buying the Convoy then it is best to buy them directly from Simon on Aliexpress. He will give discount on multiples. As cheap as the lights are it is worth it to buy more than one as you did and see what you prefer. There will always be a use for the one in the bathroom regardless of power. LOL
Also as already mentioned - take a look at the Eagle Eye A6 (tube like S6) and the Eagle Eye X6. Both are available at Banggood and are no larger than the Convoy S2 in length. The X6 does have a bigger head but still very easy to carry. (Remember BLF as a code gets you an additional 8% discount)
There is also this BLF A6 which should be going into production in the next couple weeks.
Last, for an even shorter light but more expensive than the Convoys you can get the new Sunwayman G25C for $35 on a deal right now (have to PM me for details and code)