my advise for you based on my own experience. Before my final setup, i was a Thermaltake Bigwater 735 user with dual TT Rad. Honestly speaking, despite performing not up to par, at least it is silent in a way, when rad is mounting externally, overall case temp is lowered since the heat from the proc is carried away externally unlike Air cooling, where air will most likely stays in the case before being carried away by your exhaust.
There are pro and cons, however, i never regret my purchase on Bigwater 735 as i learnt most of my WC lessons from there.
If you have a RM400 budget, id advise you to save up more and get a decent watercooling set.
My setup as of now -
Apogee GT = RM200
Swiftech MCW60-R = RM200
Cool-Trek DP1202 = RM235
MCRES Micro Reservoir = RM85 (Optional, you can replace this with a T joint)
Nirox P3800 (1500L/H) pump with brass barbs = RM45+24
Tubings (Clearflex) = RM50 (if you're tight on budget, go visit your hardware shop and look for those gas tubes, a good quality ones only cost you approx RM2 per feet)
Coolant + Distileld water (1Litre) = RM20+10
Miscelaneous = RM10 (zipties, clamps, etc)
Total RM879
Performance difference vs bigwater? Significant!!
Im totally satisfied even if it cost me that much. Again, i wont hessitate to invest in a proper cooling system, it is still useable on upgrades and wont go to waste.. not so soon lol.
Remember, its about performance, not the "cool" factor.