First, I'm a die-hard DE convert. I still use cartridge blades for my head but I'm working to change that as well. That said, I have a lot of travel coming up (3 weeks away from home), and since it involves flying, I can't exactly take any DE blades with me. This leaves me 3 options as far as I can tell; 1) ship some blades to my destinations, 2) buy the cheap CVS/Walgreens DE blades at the locations or 3) suck it up and just take some cartridges or disposable blades with me. 1 & 2 are tricky because I'll be in 3 different states during my travels, which means 3 flights, which means doing either one 3 times. So, the cartridges/disposables seem like the most sensible option.
I currently use the Fusion for my head, not because I really love it, but because I managed to get a bunch of blades and the handle for really cheap a while ago. It works fine on my head, but I hate it on my face, so it's not a great candidate for bringing along.
I have some Mach 3 blades I found buried in a drawer which I used to use on my face, but I've since lost all the handles for them. I noticed in the store the other day that the disposable Mach 3 blades seem to have the same, removable cartridge, meaning I could theoretically pick up a pack of those and use them with the cartridges I found. So here's my question: are the Mach 3 disposable handles reusable and compatible with the Mach 3 cartridges?
Next, I've read in a few places that disposable razors have inferior blades to the more expensive and individually sold cartridges. Reading other places seems to indicate that it doesn't matter, and that the cheap store-brand disposable blades are every bit as good as the "premium" name-brand cartridge blades. Walmart has a 10 or 12 pack of disposable Personna's for under $3, and while I hate to throw away so much plastic, it's hard to argue with getting so much for so little. So here's my second question: are the cheap, all plastic disposable blades just as good as the cartridge blades? Should I just spend the $3 and not look back?
tldr; questions are red and bolded
Any feedback on the matter is appreciated.
Current rig - Merkur Slant w/ IR Personna and 70's SS w/ Feather blade