@Riz J Your question is really a good one. When we go in bit detail, it is difficult to take decision. Both are in totally different sectors and valuation. Risk factor is also there. SBFC total issue size is smaller than other with fresh equity and OFS. Promoters holding will also be more after this IPO, about 64%, in comparison to Concord of about 44%.. As far as F V is concerned Concord is Re 1, where as SBFC Rs.10. Pricing of Concord is at very high valuation. Bigger size issue with totally OFS. SBFC is bit risky business model with NPA may increase at any time.
Now to consider GMP. According to C G GMP of SBFC is very good. GMP of Concord is going down and down, why difficult to say.
Now today's Share Market is not in good condition. Effect of rating of USA from AAA to AA+.
At present it looks that SBFC is on better side for gains. For listing gains Concord will not go in negative. Apply in sHNI will give return if allotted. Exceptions are always there. Difficult to say for today. So, after 15 days, you can understand.
Not going to comment on listing of shares you mentioned. Now you have to decide according to your financial and risk appetite.
Best of luck.