Having tried both Globefish (sad excuse for a Izakaya) and El's, I'd have to say I doubt I would ever go back to Globefish if I was ever in the area. It's not that Globefish was bad (it's pretty decent for what they do), it's just that El's is that much better in terms of value and quality.
They are small and I have read reports of bad service but luckily when we went the service was decent. It's not knock you off your socks service like in NY or Vegas but passable for Calgary. But if you can look past the service and indulge in all the unique offerings they have there you'll be more than happy. The only problem, too much choice! There was stuff that other tables ordered that looked really good but we were so full and happy from what we ordered that it's definitely warrants a second visit to try other menu offerings.
They also do a Omakase which judging from how creative the chefs are, might be very tempting on a special occasion.