Read a badminton racket's specifications before choosing
Separate weight, handle size and balance, then make a useful comparison on court.
Start with the exact version
Write down the full model name and its weight and grip codes. Two rackets with similar names may have different specifications. Ask whether the one you can try matches the one offered for sale. Keep your current racket as a reference if you already have one.
U and G answer different questions
U indicates a weight class. In the usual system, 4U is lighter than 3U; the Sport Singapore guide explains this scale. G indicates handle size in the manufacturer's specification. Neither is a rating of your playing level.
For a concrete example, Yonex lists the ASTROX 77 PLAY as 4U, with an average weight of 83 g and G5 or G6 handle options. That is one model's specification, not a weight promised for every racket marked 4U.
Check the manufacturer's measuring conditions before comparing a catalogue figure with a ready-to-play racket. Record the strings and any added grip wrapping on the racket you try.
Keep balance and flexibility separate
Balance describes where the mass is distributed: towards the head, towards the handle or between the two. Flexibility describes the shaft's bending behaviour. Read both fields separately; a weight code does not describe either one.
Use the labels to shortlist rackets to try. Ask what any unfamiliar term means instead of treating a technical name as a performance score.
Check the stringing advice for your version
Ask the stringer to check the exact frame and its manufacturer's guidance before agreeing a setup. For example, VICTOR gives different tension limits for the 4U and 5U versions of DriveX F T. A limit is not a target you need to reach.
Make the trial useful
With permission, compare two rackets during a familiar session. Use the same shuttle type and repeat a few shots you already know. Note three things: how the handle feels, whether you arrive at contact as expected and whether you can repeat the result.
Also record the string and grip setup: changing those as well as the frame makes it harder to know what caused a difference. If there is no trial available, ask about the return conditions before deciding. Keep your notes about the complete setup, not just the racket's name.