Gateway 3ds VS sky3ds flashcart , which one is better ?

Many people are waiting the the sky3ds flashcart update news , while the gateway 3ds release a OMEGA V2.5 to compete with the sky3ds flashcart .

What the advantages does sky3ds flashcart has ?(make sure the sky3ds flashcart is this one : http://www.usar4.com/sky3ds-card-sky3ds-flashcart-for-playing-3ds-games-on-latest-3ds3ds-xl2ds-system-firmware-p-21.html)
     Multi-rom support.
     Support any 3DS system version(including the newest V9.2.0-20).
     Support all New3DS/3DSLL, 3DS/XL, 2DS consoles(US,EU,JP).
     Play 3DS game smoothly like a real gamecard(with all saving,load,online game, etc..functions).
     Compatible with any MicroSD 2GB, 4GB,8GB,16GB,32GB,64GB SDHC cards.

What the disadvantages does sky3ds flashcart has ?
     Play up to ten 3DS games maximum for each flashcard (any game but 10 in total only).If you want to play another game , you need to buy a new sky3ds flashcart .
     Region locking.

What the advantage does gateway 3ds flashcart has ?(make sure the sky3ds flashcart is this one : http://www.usar4.com/gateway-3ds-gateway-3ds-flashcart-play-3ds-games-on-3ds-xl-3ds-p-8.html )
Support multiROM
Game cart backup
EmuNand 9.x(play online)
Official carts region free
Support Eshop
Support SaveEditor
Support more than 10 3ds games with one micro sd card.

What the disadvantages does sky3ds flashcart has ?
Only work on 3DS/3DS XL system firmware 4.1~4.5 console