Tunehouse only do Ecutek tunes but workmanship is great. If you know nothing about modding I'd take it there as they do it for a living and are responsible for the package if something goes wrong.
For installs @LittleredMPS and @MPS2NV can help there.
For local AP tuning speak to @Rayd he may be able to book a dyno with you if you want to do it that way.
If you decide to go for etune rich tune is also a great option.
MY16 WRX STi Crystal White Pearl
-= Rally Armour Flaps - 2XS Muffler Delete =-
FG FPV F6 MKII Vixen - SOLD
-= Bluepower SRI - ID1000 Injectors - Venom Cat - XCAL3 - ProcessWest Stg2 Intercooler - 359 RWKW=-
CX9 Grand Touring Stormy Blue
-= The rolling armchair =-
6 MPS Velocity Red - SOLD
-=Cat Back Exhaust - Pirelli PZero=-
3 MPS Aurora Blue - SOLD
-=PG SRI - PG Inlet - ETS TMIC - GFB Hybrid BOV - Best Mufflers DP - Eibach Pro - AccessPort STG2 - Autotech HPFP - ITV22 - Michelin PSS=-