on the outside.....
have you visited both of their website?
spend sometime maneuvering around both of them?
try contact both of them by emails to see how they response?
try contact both of them by phones to see how they response?

after you had spend some times having hands on on both of them
1) tell us what and how you feel?
2) what are the pros and cons on both of them?
3) do you still want to use the in your opinion the not so "good" platform?

do you plan to invest >RM5000 per each buy?

Being an investor with FSM since 2011 and an investor with eUT since May 2017, let me try to answer your question.

1. Transaction Cycle : eUT is better  : time is money
    a) Reinvestment of distribution : in eUT, distribution is reflected as ur holding in the morning of 3rd business day after the reinvestment day, but FSM generally needs 2 weeks more  (or more  ) to do the same thing.
    b) Buying Cycle (non Money Market Fund) : in eUT, the new purchase is reflected as ur holding in the morning of 3rd business day after the purchase, but FSM needs 2 more business day to do the same thing. Applied to External switching too.
    c) Buying Cycle (Money Market Fund) : in eUT, the new purchase is reflected as ur holding in the morning of NEXT business day after the purchase , but FSM needs 2 more business day to do the same thing.
    d) Selling Cycle (Money Market Fund) : in eUT, the money will be received on the SAME day , but FSM needs 2 more business day to do the same thing.
  d) Selling Cycle (non Money Market Fund) : in FSM, the money generally will be received on the T+4 days, but eUT generally needs 1 more business day to do the same thing.

2. Cost : eUT is better especially for higher incomer or during rebalance of portfolio
    a) In eUT,
No Platform Fee. 
if no promotion, sales charges of all Fund (bond & equity) is at 2%.
During promotion, sales charges of all promoted Fund (bond & equity) is at 0% for >RM5K  , 1% for <RM5K.  (include external switching from other fund house/ money market fund) 
For internal fund house switching,  ZERO sales charge will be applied at any time. 
PRS 0% sales charges.
    b) In FSM,
0.2% pa Platform Fee for most of the bond fund. 
if no promotion, sales charges of all EQ Fund is at 1.75%, sales charges of all Bond Fund is at 0%,
During promotion, sales charges of all promoted Fund (bond & equity) is at 1% to 0.57% (include external switching from other fund house/ money market fund) 
For internal fund house switching, credit system is applied, which is not as straight forward as eUT.   
PRS 0% sales charges.

3. Platform interface: Tied 
After latest update of eUT website, i do think the eUT website is slightly better/ user friendly/ informative than FSM's

4 Customer Service: FSM wins, but do u need frequently? 
if u write an email to eUT, 99.99%    of chance u won't receive any reply from them by email. u have to call them to have an answer. I didn't try their live chat.
Meanwhile, the Customer Service of FSM is really good  , they will reply the email / give u a call to explain within the same day. While, i don't like their live chat because CIS keeps going to ask me to wait, may be they handle too many customers at the same time.

5. Fund Choice/ Investment mode 
As my last check, wholesale fund and non MYR fund are not available in eUT while FSM do sale many wholesale fund and non MYR fund.
eUT do not accept EPF investment while FSM do.

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Now, I have 6 digit investment with eUT (15% of my total portfolio), but i didn't pay single cent for sales charges so far, it saves me > RM2K.
Therefore, i prefer to invest fresh fund with eUT during promo, but use FSM to buy the wholesale fund and maintain the old portfolio with them.