What's this now? I've heard of a flashcart that can take a ROM or two at a time, but is there a legitimate SD card style flashcart out there now for purchase?
There is a website --
http://www.retrohq.co.uk/support/neogeo-pocket-sd-support/
I'm not sure if he's shipping much of them now as the developer got very ill for an extended period and the preorders fell behind.
I got in on it way back, ignored the dumb forum drama over it. It's actually a very well made little cartridge and converted the payment to USD I think it cost me either $90-100 shipped at most. It has a solid board within and a 3D printed clamshell with a nice little sticker on the outside. The OS in it is pretty and easy to navigate with easy prompts at the bottom, plus it will work on all models of NGP and NGPC too and will know which it is put into. The device has a total of 16MB of internal storage to copy from SD to system for use. That to me is the only minor downer, the transfer rate is abysmal at 1min for 1MB of transfer, so your smallest (512kb) games will take 30sec to copy and the largest at 4MB will take 4min to dump so in a way the wait range is like the NeoSD. Once they are moved over they're in a position to instantly fire up once selected from the menu. Each game you have whether in storage or memory card can be written in either space to keep that save data up to date so you won't lose any progress regardless of where the game itself currently sits.
Given the asinine pricing on a few games loose which get into far more when complete the thing is a total money saver, and given you may want to minimize carrying around stuff to just 1 cart it's a huge space saver too. 1GB microsd card is all you really need as it will be way too much as it is with that.
Despite having that I do have 15 games, 1 (Biomotor Unitron) is CIB but the rest are just game+dust case. I don't have a huge pile of fighters as I really did love the variety even if it was limited for it. I wish I could have all the games I originally had back when it was on the market but I can't stomach coughing up the price for Rockman and Cotton.
Recently I did get the last game I was looking to get of my original stuff which was Baseball Stars Color outside of those other 2 imports. I've got that, Biomotor Unitron, Dark Arms, Fatal Fury, KOF R2, Last Blade, Metal Slug 1st and 2nd Missions, Neo Turf Masters, Pac-Man, Puzzle Bobble Mini, Samurai Shodown 2, SNK Gals Fighter, SNK vs Capcom MOTM, and Sonic.