ANT MINER VS GPU

Hi miners !

There is two months ago, I started to be obsessed by the crypto currencies world Grin
For a first experience, I bought a Zeusminer Blizzard (Scrypt 1.5 Mh/s) but today I'm asking myself on the power rentability so I did some searches:

Scrypt ASIC mining is power efficient and cheap regarding the hash rate it offers
GPU only coins are much more profitable, and RIGs offers the best coins choices

Energy costs in France (EDF):

Low cost period: 0.0623 €/kWh
High cost period: 0.1019 €/kWh

GPU RIG

I made this "cheap" R9 based config:
Motherboard: ASRock H81 Pro BTC (PCI-E x5): 54.95 €
CPU: Intel Celeron G1840 : 44.75€
RAM: Crucial Ballistix Sport 4Go DDR3 : 25.35€
GPU: 3x AMD Radeon Sapphire R9 290 Tri-X (Used) : ~600€
SSD: Corsair Force Series LS 60 Go : 41.95€
Power Supply: Be Quiet ! Power Zone 1000W 80PLUS Bronze : 184.95€

Total: 951.95 € = 1 095.62 $
Litecoin average hashrate: 3 x 800 kH/s = ~ 2.4 MH/s = 16.41 LTC / Year = 0.13 BTC / Year
Monero average hashrate: 3 x 700 H/s = ~ 2.1 kH/s = 561.15 XMR / Year = 1.209 BTC / Year
Power consumption: ~1kWh => ~ 130€ / Year

Scrypt ASIC

From the same range of price, I found the Zeusminer LIGHTNING X6 + 1200W PSU (both used)

Total: 1 100 € = 1 238.21 $
Litecoin average hashrate: ~ 42 MH/s = 287.17 LTC / Year = 2.29 BTC / Year
Power consumption: ~1kWh => ~ 130€ / Year

To conclude

What do you think about my calculations ?
Do you think it is preferable to mine Scrypt with ASIC with a huge hash rate, or is it better to build a GPU RIG because GPU/CPU only coins are more profitable ?

Thanks for !
And sorry for my english