HellJumper, on 03 March 2016 - 06:30 AM, said:
Hello
With arhcer coming out i would like to know that in your opinion which is going to be a better lrm boat (based on load outs)
Cata
Mad dog
Archer
Stalker
Awesome
or any other mentions?
I am asking it because i have to decided to be play an lrm boat

and just need to decide between cata, mad dog and archer
Firslty, I suggest not to boat. At least keep some significant direct fire weapons. Large lasers are a good start, at least for the heavier mechs.
That said, as was previously said, you're missing the Hunchback 4J. One of the best LRM mediums in the game, due to its impressive LRM 10 quirks.
As for your original list, I'd say the competition will be between the Archer and Catapult. The Awesome is a nasty boat, but again LRM boating is dangerous at high skill levels, and taking up an assault slot with one is problematic.
Meanwhile, the Cat is definitely an ideal LRM mech with its configuration and quiks, but right now suffers from its ludicrous size, which tends to draw fire and make you easier to hit and pinpoint. On the other hand, it's a good XL mech due to its layout (which, I imagine, will remain the same even with rescale), which is really necessary to have good LRMs AND a decent alternate set of weapons. Being a lighter mech, it also has potentially better mobility and can mount Jump Jets (I usually put 1 in my catapults, which is enough to clear obstacles and climb ledges).
One the other hand, the Archer is THE original and iconic Inner Sphere LRM mech. This makes it almost a certainty it will have some good missile quirks, possibly LRM specific ones (unlike the Catapult). It also has a great placement for its CT energy hardpoints (perfect for TAG... to get a taste for it, load a TAG on a Hunchback 4J's head, you'll see), bunch more hardpoints than the Catapult, has 5 more tons to play with, and the hero version has ECM (which would replace the BAP you should always run on a lurmer). On the other hand, it's a taller mech, is probalby not as XL friendly (big side torsos, and has less mobility/no jump jets. It's also got more mobility on the arm hardpoints, but that may be countered by a smaller torso twist range (the Catapult's range is fairly large, after all)... though I imagine the arm weapons will make it easier for the Archer to deal with pesky lights.
My thinking is that the Archer will be the better LRM mech at first, especially if it has decent quirks. Once the Catapult gets its rescale, however, then there might be some parity. The Catapult would be a smaller and more mobile platform, while the Archer will be slower and more powerful.
Both, however, will win in the "cool weapons port" department.