Right now I have a M36 Feldbluse and a M43 HBT tunic. My next planned purchase is a M43 Feldbluse for late-war use.
For Feldhose I have M40 style made by the Swedish Army in 1940. Nice little touch on the inside waistband with the triple crown.
Also have M43 HBT Tuchhose and a field-made pair of Zeltbahn material trousers.
Now for WWI I have a M1907/14 Feldbluse with regular Brandenburg cuffs since I'm not a Garde. Since my Swedish M40 trousers and the M1907/14/15 feldhose have so much in common (Cut has a few minuscule differences and there's an extra set of buttons for the braces) I just use those. It being over 70 years old plus much use has faded it to a near gray and it is a very strong material and make. One of the few original items I use and plan on continuing to use.