In the past I've used the Scanstrut right angle gland DSH10. I'm used to using this type of gasketed gland on boat decks and like them. The DSH10 is a right angle gland so no big loop sticking up like from the typical boat gland that sends the wire straight up from the surface.
There was a downside though: Unless I wanted to use two of them for a pair of wires (I didn't), I had to use a workaround. With the DSH10 it would perfectly accept an Ancor 12AWG round duplex cable, so that was nice; but that meant I had to transition to that cable, then transition again once inside (because I wanted larger than 12AWG for the inside run). Pain. Plus if you don't already have a stash of 12AWG round, it's not so easy to find (most duplex is flat, at least with the cables I use).
Recently Scanstrut came out with the DSHD6. This is a single gland that will take a pair of cables. There are three different size seals included so it will fit a variety of wire sizes (centered around 10AWG or so). One set is un-drilled so you can customize if.
I haven't installed one yet, but I did order one, receive it, and lay out the parts and pieces on the workbench. I'm pleased with it and will be using them for various projects going forward. Good faying surface, good seal, low profile, flexibility in the wire sizes. It does need to be round cable, so if you wanted to use a single flat duplex wire (without removing the outer jacket) you'd still be better off to get a single gland and drill a sort of "infinity" shape into the un-drilled seal they often include. But for a pair of wires, I really like this one.
Here is what the Scanstrut DSDH6 looks like (the MC-4 cables are just an example). It is smaller in person that I (somehow) envisioned from the photos. Very tidy.